From wkdenton at verizon.net  Fri Oct 17 11:47:34 2025
From: wkdenton at verizon.net (William K Denton)
Date: Fri, 17 Oct 2025 14:47:34 -0400
Subject: Chain & sprockets
References: <05379042-98DB-4E92-91AB-FC93FD044366.ref@verizon.net>
Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366@verizon.net>

Hello list,

I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.

So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.

First, about the chain: 
My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan. 
On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain. 

Drive (front) 17T Sprocket:
This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece. 

Driven (rear) 45 T Sprocket:
Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated. 

That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies. 

Best regards,
Bill Denton
Yardley, PA
267-980-7788
WKDENTON at VERIZON.NET
Lazarus CycleWorks 
We Breathe New Life into Old Bikes

Sent from my iPhone

From scapco at gmail.com  Fri Oct 17 13:39:16 2025
From: scapco at gmail.com (Charles Scappaticci)
Date: Fri, 17 Oct 2025 16:39:16 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
References: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
Message-ID: <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>

Hi Bill,

I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.

I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.

75k on my GPZ and climbing.

Charles S.

Sent from my iPhone

> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
> 
> Send GPZList mailing list submissions to
>    gpzlist at lists.micapeak.com
> 
> To subscribe or unsubscribe via the World Wide Web, visit
>    https://lists.micapeak.com/mailman/listinfo/gpzlist
> or, via email, send a message with subject or body 'help' to
>    gpzlist-request at lists.micapeak.com
> 
> You can reach the person managing the list at
>    gpzlist-owner at lists.micapeak.com
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of GPZList digest..."
> 
> 
> Today's Topics:
> 
>   1. Chain & sprockets (William K Denton)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 17 Oct 2025 14:47:34 -0400
> From: William K Denton <wkdenton at verizon.net>
> To: GPZ List <gpzlist at lists.micapeak.com>
> Subject: Chain & sprockets
> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
> Content-Type: text/plain; charset=utf-8
> 
> Hello list,
> 
> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
> 
> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
> 
> First, about the chain:
> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.
> 
> Drive (front) 17T Sprocket:
> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.
> 
> Driven (rear) 45 T Sprocket:
> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.
> 
> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.
> 
> Best regards,
> Bill Denton
> Yardley, PA
> 267-980-7788
> WKDENTON at VERIZON.NET
> Lazarus CycleWorks
> We Breathe New Life into Old Bikes
> 
> Sent from my iPhone
> 
> 
> End of GPZList Digest, Vol 181, Issue 1
> ***************************************

From bill at cherryriver.com  Fri Oct 17 14:06:48 2025
From: bill at cherryriver.com (William P. Zeller)
Date: Fri, 17 Oct 2025 16:06:48 -0500
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
References: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
Message-ID: <0586e838-4cac-4261-bf8c-1ddad7738e44@cherryriver.com>

Bill-

Good to hear from you.

Regrettably, I parted with my GPZ a while back for inexplicable 
reasons.  Still a mystery as it was running and going flawlessly.

My stock chain went 48,000 miles on a diet of PJ-1 Blue Label.

I replaced it with the then-current EK VX-2 X-ring chain.  I did not 
replace the sprockets, as they looked fine to me.

The EK chain had 58,000 miles on it when I sold the bike, still spinning 
on the OEM sprockets.  The chain was still quiet-running, virtually 
kinkless, and still within the specified stretch limit on the 21-link test.

And the sprockets were still decent-looking.

Needless to say, it's been all EK VX-series X-ring chains ever since.

Bill Zeller
Lemont, IL
(FJR1300, CBR11 Blackbird these days, a worthy replacement for the ZX)


On 10/17/2025 2:00 PM, gpzlist-request at lists.micapeak.com wrote:
> Send GPZList mailing list submissions to
> 	gpzlist at lists.micapeak.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
> 	https://lists.micapeak.com/mailman/listinfo/gpzlist
> or, via email, send a message with subject or body 'help' to
> 	gpzlist-request at lists.micapeak.com
>
> You can reach the person managing the list at
> 	gpzlist-owner at lists.micapeak.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of GPZList digest..."
>
>
> Today's Topics:
>
>     1. Chain & sprockets (William K Denton)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Oct 2025 14:47:34 -0400
> From: William K Denton <wkdenton at verizon.net>
> To: GPZ List <gpzlist at lists.micapeak.com>
> Subject: Chain & sprockets
> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
> Content-Type: text/plain; charset=utf-8
>
> Hello list,
>
> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>
> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>
> First, about the chain:
> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.
>
> Drive (front) 17T Sprocket:
> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.
>
> Driven (rear) 45 T Sprocket:
> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.
>
> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.
>
> Best regards,
> Bill Denton
> Yardley, PA
> 267-980-7788
> WKDENTON at VERIZON.NET
> Lazarus CycleWorks
> We Breathe New Life into Old Bikes
>
> Sent from my iPhone
>
>
> End of GPZList Digest, Vol 181, Issue 1
> ***************************************

From dominatr37 at optonline.net  Fri Oct 17 15:44:46 2025
From: dominatr37 at optonline.net (dominatr37)
Date: Fri, 17 Oct 2025 18:44:46 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <0586e838-4cac-4261-bf8c-1ddad7738e44@cherryriver.com>
Message-ID: <68A6A5020B982ECD@altprdrgo001.altice.prod.cloud.openwave.ai>
 (added by postmaster@optonline.net)

Hello, guys. I'm still here and I still have my GPZ. I have 5 other bikes besides it. Ralph L Angelo JrAuthor of Cool Stuff Http://tinyurl.com/ralphsamazon2
-------- Original message --------From: "William P. Zeller" <bill at cherryriver.com> Date: 10/17/25  5:06 PM  (GMT-05:00) To: Ralph <DOMINATR37 at optonline.net> Subject: Re: GPZList Digest, Vol 181, Issue 1 Bill-Good to hear from you.Regrettably, I parted with my GPZ a while back for inexplicable reasons.  Still a mystery as it was running and going flawlessly.My stock chain went 48,000 miles on a diet of PJ-1 Blue Label.I replaced it with the then-current EK VX-2 X-ring chain.  I did not replace the sprockets, as they looked fine to me.The EK chain had 58,000 miles on it when I sold the bike, still spinning on the OEM sprockets.  The chain was still quiet-running, virtually kinkless, and still within the specified stretch limit on the 21-link test.And the sprockets were still decent-looking.Needless to say, it's been all EK VX-series X-ring chains ever since.Bill ZellerLemont, IL(FJR1300, CBR11 Blackbird these days, a worthy replacement for the ZX)On 10/17/2025 2:00 PM, gpzlist-request at lists.micapeak.com wrote:> Send GPZList mailing list submissions to> 	gpzlist at lists.micapeak.com>> To subscribe or unsubscribe via the World Wide Web, visit> 	https://lists.micapeak.com/mailman/listinfo/gpzlist> or, via email, send a message with subject or body 'help' to> 	gpzlist-request at lists.micapeak.com>> You can reach the person managing the list at> 	gpzlist-owner at lists.micapeak.com>> When replying, please edit your Subject line so it is more specific> than "Re: Contents of GPZList digest...">>> Today's Topics:>>     1. Chain & sprockets (William K Denton)>>> ---------------------------------------------------------------------->> Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>> Subject: Chain & sprockets> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type: text/plain; charset=utf-8>> Hello list,>> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.>> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.>> First, about the chain:> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.>> Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.>> Driven (rear) 45 T Sprocket:> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.>> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.>> Best regards,> Bill Denton> Yardley, PA> 267-980-7788> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New Life into Old Bikes>> Sent from my iPhone>>> End of GPZList Digest, Vol 181, Issue 1> ***************************************______________________________________________________________________GENERAL GPZList MAILING LIST INFORMATION:This is from the GPZList mailing list. GPZList at lists.micapeak.comhttps://lists.micapeak.com/mailman/listinfo/gpzlistYou subscribed to this mailing list. Therefore, you solicited allmail that you receive from this list. Therefore, ANY mail that youreceive from this list is, by definition, NOT Spam, and if you reportit as such, you are violating the lists.micapeak.com terms of service.To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com______________________________________________________________________YOUR PERSONAL SUBSCRIBER OPTIONS:Unsubscribe or choose new options athttps://lists.micapeak.com/mailman/options/gpzlist/dominatr37%40optonline.netYou are subscribed at the email address DOMINATR37 at optonline.net______________________________________________________________________

From richie at webhackande.se  Fri Oct 17 15:50:09 2025
From: richie at webhackande.se (Rickard Olsson)
Date: Sat, 18 Oct 2025 00:50:09 +0200
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <68f2c6ec.630a0220.139101.d973SMTPIN_ADDED_BROKEN@mx.google.com>
References: <0586e838-4cac-4261-bf8c-1ddad7738e44@cherryriver.com>
 <68f2c6ec.630a0220.139101.d973SMTPIN_ADDED_BROKEN@mx.google.com>
Message-ID: <CA+N+xUOin=rGrdVWrfOvopkb1jjTtEVqQciBwd_oc5sQ4rhmgA@mail.gmail.com>

I still got mine too, but lately I've been riding a fast triple black BMW
R1200 GSA.

The Geeper has been in the garage, in need of some TLC. I'll get around to
it, one of these days.

/ Richie

On Sat, 18 Oct 2025, 00:45 dominatr37, <dominatr37 at optonline.net> wrote:

> Hello, guys. I'm still here and I still have my GPZ. I have 5 other bikes
> besides it. Ralph L Angelo JrAuthor of Cool Stuff
> Http://tinyurl.com/ralphsamazon2
> -------- Original message --------From: "William P. Zeller" <
> bill at cherryriver.com> Date: 10/17/25  5:06 PM  (GMT-05:00) To: Ralph <
> DOMINATR37 at optonline.net> Subject: Re: GPZList Digest, Vol 181, Issue 1
> Bill-Good to hear from you.Regrettably, I parted with my GPZ a while back
> for inexplicable reasons.  Still a mystery as it was running and going
> flawlessly.My stock chain went 48,000 miles on a diet of PJ-1 Blue Label.I
> replaced it with the then-current EK VX-2 X-ring chain.  I did not replace
> the sprockets, as they looked fine to me.The EK chain had 58,000 miles on
> it when I sold the bike, still spinning on the OEM sprockets.  The chain
> was still quiet-running, virtually kinkless, and still within the specified
> stretch limit on the 21-link test.And the sprockets were still
> decent-looking.Needless to say, it's been all EK VX-series X-ring chains
> ever since.Bill ZellerLemont, IL(FJR1300, CBR11 Blackbird these days, a
> worthy replacement for the ZX)On 10/17/2025 2:00 PM,
> gpzlist-request at lists.micapeak.com wrote:> Send GPZList mailing list
> submissions to>      gpzlist at lists.micapeak.com>> To subscribe or
> unsubscribe via the World Wide Web, visit>
> https://lists.micapeak.com/mailman/listinfo/gpzlist> or, via email, send
> a message with subject or body 'help' to>
> gpzlist-request at lists.micapeak.com>> You can reach the person managing
> the list at>     gpzlist-owner at lists.micapeak.com>> When replying, please
> edit your Subject line so it is more specific> than "Re: Contents of
> GPZList digest...">>> Today's Topics:>>     1. Chain & sprockets (William K
> Denton)>>>
> ---------------------------------------------------------------------->>
> Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <
> wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>>
> Subject: Chain & sprockets> Message-ID: <
> 05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type:
> text/plain; charset=utf-8>> Hello list,>> I hope I’m not the only person
> left on this list that actually owns a GPZ 1100 in North America lol.>> So,
> I turned 40,000 miles a couple weeks ago and it’s time for new chain and
> sprockets and I’ve come up against a little situation that I’m sure you all
> already know the answer to.>> First, about the chain:> My chain is the
> original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the
> Enuma website, it says that EK50 chains are “generically equivalent to 520
> chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I
> verified the 5/8” pitch value, but when I measured the chain width, it
> measures 3/8” between the inner plates, which would make it a 530 chain,
> not a generically equivalent 520 chain as Enuma’s website claims. Please
> explain. Also looking for experience based replacements for the OEM
> chain.>> Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw,
> so I’m looking for generic equivalents for this item that are otherwise
> identical to the OEM piece.>> Driven (rear) 45 T Sprocket:> Although this
> sprocket is still available from momma Kaw, I’m thinking that there are
> other equivalent alternatives to the $119 OEM piece. Experience based
> suggestions encouraged and appreciated.>> That is all, and I appreciate any
> insight and recommendations based on your own experiences. I look forward
> eagerly to your replies.>> Best regards,> Bill Denton> Yardley, PA>
> 267-980-7788> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New
> Life into Old Bikes>> Sent from my iPhone>>> End of GPZList Digest, Vol
> 181, Issue 1>
> ***************************************______________________________________________________________________GENERAL
> GPZList MAILING LIST INFORMATION:This is from the GPZList mailing list.
> GPZList at lists.micapeak.comhttps://
> lists.micapeak.com/mailman/listinfo/gpzlistYou subscribed to this mailing
> list. Therefore, you solicited allmail that you receive from this list.
> Therefore, ANY mail that youreceive from this list is, by definition, NOT
> Spam, and if you reportit as such, you are violating the
> lists.micapeak.com terms of service.To unsubscribe, you may send email to
> gpzlist-unsubscribe at lists.micapeak.com______________________________________________________________________YOUR
> PERSONAL SUBSCRIBER OPTIONS:Unsubscribe or choose new options athttps://
> lists.micapeak.com/mailman/options/gpzlist/dominatr37%40optonline.netYou
> are subscribed at the email address
> DOMINATR37 at optonline.net______________________________________________________________________
> ______________________________________________________________________
> GENERAL GPZList MAILING LIST INFORMATION:
> This is from the GPZList mailing list. GPZList at lists.micapeak.com
> https://lists.micapeak.com/mailman/listinfo/gpzlist
> You subscribed to this mailing list. Therefore, you solicited all
> mail that you receive from this list. Therefore, ANY mail that you
> receive from this list is, by definition, NOT Spam, and if you report
> it as such, you are violating the lists.micapeak.com terms of service.
>
> To unsubscribe, you may send email to
> gpzlist-unsubscribe at lists.micapeak.com
> ______________________________________________________________________
> YOUR PERSONAL SUBSCRIBER OPTIONS:
> Unsubscribe or choose new options at
> https://lists.micapeak.com/mailman/options/gpzlist/richie%40webhackande.se
> You are subscribed at the email address RICHIE at webhackande.se
> ______________________________________________________________________
>

From pmheimjr at gmail.com  Fri Oct 17 16:08:44 2025
From: pmheimjr at gmail.com (Paul Heim)
Date: Fri, 17 Oct 2025 18:08:44 -0500
Subject: GPZList Digest, Vol 181, Issue 1
Message-ID: <4F99CA4D-CBDC-49DA-997F-FAAE10F20D50@gmail.com>

I still have mine, but need to do some work on it. I’ve not messed with the chain or sprockets but I have noted Mr. Zeller’s advice!
Regards,
Paul
Sent from my iPhone

> On Oct 17, 2025, at 5:50 PM, Rickard Olsson <richie at webhackande.se> wrote:
> I still got mine too, but lately I've been riding a fast triple black BMW
> R1200 GSA.
> 
> The Geeper has been in the garage, in need of some TLC. I'll get around to
> it, one of these days.
> 
> / Richie
> 
> On Sat, 18 Oct 2025, 00:45 dominatr37, <dominatr37 at optonline.net> wrote:
> 
>> Hello, guys. I'm still here and I still have my GPZ. I have 5 other bikes
>> besides it. Ralph L Angelo JrAuthor of Cool Stuff
>> Http://tinyurl.com/ralphsamazon2
>> -------- Original message --------From: "William P. Zeller" <
>> bill at cherryriver.com> Date: 10/17/25  5:06 PM  (GMT-05:00) To: Ralph <
>> DOMINATR37 at optonline.net> Subject: Re: GPZList Digest, Vol 181, Issue 1
>> Bill-Good to hear from you.Regrettably, I parted with my GPZ a while back
>> for inexplicable reasons.  Still a mystery as it was running and going
>> flawlessly.My stock chain went 48,000 miles on a diet of PJ-1 Blue Label.I
>> replaced it with the then-current EK VX-2 X-ring chain.  I did not replace
>> the sprockets, as they looked fine to me.The EK chain had 58,000 miles on
>> it when I sold the bike, still spinning on the OEM sprockets.  The chain
>> was still quiet-running, virtually kinkless, and still within the specified
>> stretch limit on the 21-link test.And the sprockets were still
>> decent-looking.Needless to say, it's been all EK VX-series X-ring chains
>> ever since.Bill ZellerLemont, IL(FJR1300, CBR11 Blackbird these days, a
>> worthy replacement for the ZX)On 10/17/2025 2:00 PM,
>> gpzlist-request at lists.micapeak.com wrote:> Send GPZList mailing list
>> submissions to>      gpzlist at lists.micapeak.com>> To subscribe or
>> unsubscribe via the World Wide Web, visit>
>> https://lists.micapeak.com/mailman/listinfo/gpzlist> or, via email, send
>> a message with subject or body 'help' to>
>> gpzlist-request at lists.micapeak.com>> You can reach the person managing
>> the list at>     gpzlist-owner at lists.micapeak.com>> When replying, please
>> edit your Subject line so it is more specific> than "Re: Contents of
>> GPZList digest...">>> Today's Topics:>>     1. Chain & sprockets (William K
>> Denton)>>>
>> ---------------------------------------------------------------------->>
>> Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <
>> wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>>
>> Subject: Chain & sprockets> Message-ID: <
>> 05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type:
>> text/plain; charset=utf-8>> Hello list,>> I hope I’m not the only person
>> left on this list that actually owns a GPZ 1100 in North America lol.>> So,
>> I turned 40,000 miles a couple weeks ago and it’s time for new chain and
>> sprockets and I’ve come up against a little situation that I’m sure you all
>> already know the answer to.>> First, about the chain:> My chain is the
>> original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the
>> Enuma website, it says that EK50 chains are “generically equivalent to 520
>> chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I
>> verified the 5/8” pitch value, but when I measured the chain width, it
>> measures 3/8” between the inner plates, which would make it a 530 chain,
>> not a generically equivalent 520 chain as Enuma’s website claims. Please
>> explain. Also looking for experience based replacements for the OEM
>> chain.>> Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw,
>> so I’m looking for generic equivalents for this item that are otherwise
>> identical to the OEM piece.>> Driven (rear) 45 T Sprocket:> Although this
>> sprocket is still available from momma Kaw, I’m thinking that there are
>> other equivalent alternatives to the $119 OEM piece. Experience based
>> suggestions encouraged and appreciated.>> That is all, and I appreciate any
>> insight and recommendations based on your own experiences. I look forward
>> eagerly to your replies.>> Best regards,> Bill Denton> Yardley, PA>
>> 267-980-7788> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New
>> Life into Old Bikes>> Sent from my iPhone>>> End of GPZList Digest, Vol
>> 181, Issue 1>
>> ***************************************______________________________________________________________________GENERAL
>> GPZList MAILING LIST INFORMATION:This is from the GPZList mailing list.
>> GPZList at lists.micapeak.comhttps://
>> lists.micapeak.com/mailman/listinfo/gpzlistYou subscribed to this mailing
>> list. Therefore, you solicited allmail that you receive from this list.
>> Therefore, ANY mail that youreceive from this list is, by definition, NOT
>> Spam, and if you reportit as such, you are violating the
>> lists.micapeak.com terms of service.To unsubscribe, you may send email to
>> gpzlist-unsubscribe at lists.micapeak.com______________________________________________________________________YOUR
>> PERSONAL SUBSCRIBER OPTIONS:Unsubscribe or choose new options athttps://
>> lists.micapeak.com/mailman/options/gpzlist/dominatr37%40optonline.netYou
>> are subscribed at the email address
>> DOMINATR37 at optonline.net______________________________________________________________________
>> ______________________________________________________________________
>> GENERAL GPZList MAILING LIST INFORMATION:
>> This is from the GPZList mailing list. GPZList at lists.micapeak.com
>> https://lists.micapeak.com/mailman/listinfo/gpzlist
>> You subscribed to this mailing list. Therefore, you solicited all
>> mail that you receive from this list. Therefore, ANY mail that you
>> receive from this list is, by definition, NOT Spam, and if you report
>> it as such, you are violating the lists.micapeak.com terms of service.
>> 
>> To unsubscribe, you may send email to
>> gpzlist-unsubscribe at lists.micapeak.com
>> ______________________________________________________________________
>> YOUR PERSONAL SUBSCRIBER OPTIONS:
>> Unsubscribe or choose new options at
>> https://lists.micapeak.com/mailman/options/gpzlist/richie%40webhackande.se
>> You are subscribed at the email address RICHIE at webhackande.se
>> ______________________________________________________________________
> ______________________________________________________________________
> GENERAL GPZList MAILING LIST INFORMATION:
> This is from the GPZList mailing list. GPZList at lists.micapeak.com
> https://lists.micapeak.com/mailman/listinfo/gpzlist
> You subscribed to this mailing list. Therefore, you solicited all
> mail that you receive from this list. Therefore, ANY mail that you
> receive from this list is, by definition, NOT Spam, and if you report
> it as such, you are violating the lists.micapeak.com terms of service.
> 
> To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
> ______________________________________________________________________
> YOUR PERSONAL SUBSCRIBER OPTIONS:
> Unsubscribe or choose new options at
> https://lists.micapeak.com/mailman/options/gpzlist/pmheimjr%40gmail.com
> You are subscribed at the email address pmheimjr at gmail.com
> ______________________________________________________________________

From dominatr37 at optonline.net  Fri Oct 17 17:14:40 2025
From: dominatr37 at optonline.net (dominatr37)
Date: Fri, 17 Oct 2025 20:14:40 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>
Message-ID: <68A40BD80BF13600@altprdrgo006.altice.prod.cloud.openwave.ai>
 (added by postmaster@optonline.net)

((75k on my GPZ and climbing)) I'm right behind you, Charles. 73K on my GPZ. Ralph L Angelo JrAuthor of Cool Stuff Http://tinyurl.com/ralphsamazon2
-------- Original message --------From: Charles Scappaticci <scapco at gmail.com> Date: 10/17/25  4:39 PM  (GMT-05:00) To: Ralph <DOMINATR37 at optonline.net> Subject: Re: GPZList Digest, Vol 181, Issue 1 Hi Bill,I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.75k on my GPZ and climbing.Charles S.Sent from my iPhone> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:> > Send GPZList mailing list submissions to>    gpzlist at lists.micapeak.com> > To subscribe or unsubscribe via the World Wide Web, visit>    https://lists.micapeak.com/mailman/listinfo/gpzlist> or, via email, send a message with subject or body 'help' to>    gpzlist-request at lists.micapeak.com> > You can reach the person managing the list at>    gpzlist-owner at lists.micapeak.com> > When replying, please edit your Subject line so it is more specific> than "Re: Contents of GPZList digest..."> > > Today's Topics:> >   1. Chain & sprockets (William K Denton)> > > ----------------------------------------------------------------------> > Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>> Subject: Chain & sprockets> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type: text/plain; charset=utf-8> > Hello list,> > I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.> > So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.> > First, about the chain:> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.> > Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.> > Driven (rear) 45 T Sprocket:> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.> > That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.> > Best regards,> Bill Denton> Yardley, PA> 267-980-7788> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New Life into Old Bikes> > Sent from my iPhone> > > End of GPZList Digest, Vol 181, Issue 1> ***************************************______________________________________________________________________GENERAL GPZList MAILING LIST INFORMATION:This is from the GPZList mailing list. GPZList at lists.micapeak.comhttps://lists.micapeak.com/mailman/listinfo/gpzlistYou subscribed to this mailing list. Therefore, you solicited allmail that you receive from this list. Therefore, ANY mail that youreceive from this list is, by definition, NOT Spam, and if you reportit as such, you are violating the lists.micapeak.com terms of service.To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com______________________________________________________________________YOUR PERSONAL SUBSCRIBER OPTIONS:Unsubscribe or choose new options athttps://lists.micapeak.com/mailman/options/gpzlist/dominatr37%40optonline.netYou are subscribed at the email address DOMINATR37 at optonline.net______________________________________________________________________

From arthjohnson270 at gmail.com  Fri Oct 17 17:51:47 2025
From: arthjohnson270 at gmail.com (Art Johnson)
Date: Fri, 17 Oct 2025 18:51:47 -0600
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <4F99CA4D-CBDC-49DA-997F-FAAE10F20D50@gmail.com>
References: <4F99CA4D-CBDC-49DA-997F-FAAE10F20D50@gmail.com>
Message-ID: <BC182E5E-C7BD-4700-BE85-24024E7E69A6@gmail.com>

JT 45T rear sprocket 
JT 17 T front sprocket
530 chain 112 links


> On Oct 17, 2025, at 5:15 PM, Paul Heim <pmheimjr at gmail.com> wrote:
> 
> I still have mine, but need to do some work on it. I’ve not messed with the chain or sprockets but I have noted Mr. Zeller’s advice!
> Regards,
> Paul
> Sent from my iPhone
> 
>> On Oct 17, 2025, at 5:50 PM, Rickard Olsson <richie at webhackande.se> wrote:
>> I still got mine too, but lately I've been riding a fast triple black BMW
>> R1200 GSA.
>> 
>> The Geeper has been in the garage, in need of some TLC. I'll get around to
>> it, one of these days.
>> 
>> / Richie
>> 
>>> On Sat, 18 Oct 2025, 00:45 dominatr37, <dominatr37 at optonline.net> wrote:
>>> 
>>> Hello, guys. I'm still here and I still have my GPZ. I have 5 other bikes
>>> besides it. Ralph L Angelo JrAuthor of Cool Stuff
>>> Http://tinyurl.com/ralphsamazon2
>>> -------- Original message --------From: "William P. Zeller" <
>>> bill at cherryriver.com> Date: 10/17/25  5:06 PM  (GMT-05:00) To: Ralph <
>>> DOMINATR37 at optonline.net> Subject: Re: GPZList Digest, Vol 181, Issue 1
>>> Bill-Good to hear from you.Regrettably, I parted with my GPZ a while back
>>> for inexplicable reasons.  Still a mystery as it was running and going
>>> flawlessly.My stock chain went 48,000 miles on a diet of PJ-1 Blue Label.I
>>> replaced it with the then-current EK VX-2 X-ring chain.  I did not replace
>>> the sprockets, as they looked fine to me.The EK chain had 58,000 miles on
>>> it when I sold the bike, still spinning on the OEM sprockets.  The chain
>>> was still quiet-running, virtually kinkless, and still within the specified
>>> stretch limit on the 21-link test.And the sprockets were still
>>> decent-looking.Needless to say, it's been all EK VX-series X-ring chains
>>> ever since.Bill ZellerLemont, IL(FJR1300, CBR11 Blackbird these days, a
>>> worthy replacement for the ZX)On 10/17/2025 2:00 PM,
>>> gpzlist-request at lists.micapeak.com wrote:> Send GPZList mailing list
>>> submissions to>      gpzlist at lists.micapeak.com>> To subscribe or
>>> unsubscribe via the World Wide Web, visit>
>>> https://lists.micapeak.com/mailman/listinfo/gpzlist> or, via email, send
>>> a message with subject or body 'help' to>
>>> gpzlist-request at lists.micapeak.com>> You can reach the person managing
>>> the list at>     gpzlist-owner at lists.micapeak.com>> When replying, please
>>> edit your Subject line so it is more specific> than "Re: Contents of
>>> GPZList digest...">>> Today's Topics:>>     1. Chain & sprockets (William K
>>> Denton)>>>
>>> ---------------------------------------------------------------------->>
>>> Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <
>>> wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>>
>>> Subject: Chain & sprockets> Message-ID: <
>>> 05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type:
>>> text/plain; charset=utf-8>> Hello list,>> I hope I’m not the only person
>>> left on this list that actually owns a GPZ 1100 in North America lol.>> So,
>>> I turned 40,000 miles a couple weeks ago and it’s time for new chain and
>>> sprockets and I’ve come up against a little situation that I’m sure you all
>>> already know the answer to.>> First, about the chain:> My chain is the
>>> original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the
>>> Enuma website, it says that EK50 chains are “generically equivalent to 520
>>> chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I
>>> verified the 5/8” pitch value, but when I measured the chain width, it
>>> measures 3/8” between the inner plates, which would make it a 530 chain,
>>> not a generically equivalent 520 chain as Enuma’s website claims. Please
>>> explain. Also looking for experience based replacements for the OEM
>>> chain.>> Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw,
>>> so I’m looking for generic equivalents for this item that are otherwise
>>> identical to the OEM piece.>> Driven (rear) 45 T Sprocket:> Although this
>>> sprocket is still available from momma Kaw, I’m thinking that there are
>>> other equivalent alternatives to the $119 OEM piece. Experience based
>>> suggestions encouraged and appreciated.>> That is all, and I appreciate any
>>> insight and recommendations based on your own experiences. I look forward
>>> eagerly to your replies.>> Best regards,> Bill Denton> Yardley, PA>
>>> 267-980-7788> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New
>>> Life into Old Bikes>> Sent from my iPhone>>> End of GPZList Digest, Vol
>>> 181, Issue 1>
>>> ***************************************______________________________________________________________________GENERAL
>>> GPZList MAILING LIST INFORMATION:This is from the GPZList mailing list.
>>> GPZList at lists.micapeak.comhttps://
>>> lists.micapeak.com/mailman/listinfo/gpzlistYou subscribed to this mailing
>>> list. Therefore, you solicited allmail that you receive from this list.
>>> Therefore, ANY mail that youreceive from this list is, by definition, NOT
>>> Spam, and if you reportit as such, you are violating the
>>> lists.micapeak.com terms of service.To unsubscribe, you may send email to
>>> gpzlist-unsubscribe at lists.micapeak.com______________________________________________________________________YOUR
>>> PERSONAL SUBSCRIBER OPTIONS:Unsubscribe or choose new options athttps://
>>> lists.micapeak.com/mailman/options/gpzlist/dominatr37%40optonline.netYou
>>> are subscribed at the email address
>>> DOMINATR37 at optonline.net______________________________________________________________________
>>> ______________________________________________________________________
>>> GENERAL GPZList MAILING LIST INFORMATION:
>>> This is from the GPZList mailing list. GPZList at lists.micapeak.com
>>> https://lists.micapeak.com/mailman/listinfo/gpzlist
>>> You subscribed to this mailing list. Therefore, you solicited all
>>> mail that you receive from this list. Therefore, ANY mail that you
>>> receive from this list is, by definition, NOT Spam, and if you report
>>> it as such, you are violating the lists.micapeak.com terms of service.
>>> 
>>> To unsubscribe, you may send email to
>>> gpzlist-unsubscribe at lists.micapeak.com
>>> ______________________________________________________________________
>>> YOUR PERSONAL SUBSCRIBER OPTIONS:
>>> Unsubscribe or choose new options at
>>> https://lists.micapeak.com/mailman/options/gpzlist/richie%40webhackande.se
>>> You are subscribed at the email address RICHIE at webhackande.se
>>> ______________________________________________________________________
>> ______________________________________________________________________
>> GENERAL GPZList MAILING LIST INFORMATION:
>> This is from the GPZList mailing list. GPZList at lists.micapeak.com
>> https://lists.micapeak.com/mailman/listinfo/gpzlist
>> You subscribed to this mailing list. Therefore, you solicited all
>> mail that you receive from this list. Therefore, ANY mail that you
>> receive from this list is, by definition, NOT Spam, and if you report
>> it as such, you are violating the lists.micapeak.com terms of service.
>> 
>> To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
>> ______________________________________________________________________
>> YOUR PERSONAL SUBSCRIBER OPTIONS:
>> Unsubscribe or choose new options at
>> https://lists.micapeak.com/mailman/options/gpzlist/pmheimjr%40gmail.com
>> You are subscribed at the email address pmheimjr at gmail.com
>> ______________________________________________________________________
> ______________________________________________________________________
> GENERAL GPZList MAILING LIST INFORMATION:
> This is from the GPZList mailing list. GPZList at lists.micapeak.com
> https://lists.micapeak.com/mailman/listinfo/gpzlist
> You subscribed to this mailing list. Therefore, you solicited all
> mail that you receive from this list. Therefore, ANY mail that you
> receive from this list is, by definition, NOT Spam, and if you report
> it as such, you are violating the lists.micapeak.com terms of service.
> 
> To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
> ______________________________________________________________________
> YOUR PERSONAL SUBSCRIBER OPTIONS:
> Unsubscribe or choose new options at
> https://lists.micapeak.com/mailman/options/gpzlist/arthjohnson270%40gmail.com
> You are subscribed at the email address arthjohnson270 at gmail.com
> ______________________________________________________________________

From sirdondiego at outlook.com  Sat Oct 18 21:39:47 2025
From: sirdondiego at outlook.com (Don French)
Date: Sun, 19 Oct 2025 04:39:47 +0000
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>
References: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
 <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>
Message-ID: <BYAPR12MB3093D2D5A629B594401BF5E2B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>

JT Sprocket Is what I used on my zzr12.
It works well and has lasted 10 thousand miles.


________________________________
From: GPZList <gpzlist-bounces at lists.micapeak.com> on behalf of Charles Scappaticci <scapco at gmail.com>
Sent: Friday, October 17, 2025 3:39 PM
To: Don French <Sirdondiego at outlook.com>
Subject: Re: GPZList Digest, Vol 181, Issue 1

Hi Bill,

I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.

I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.

75k on my GPZ and climbing.

Charles S.

Sent from my iPhone

> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
>
> Send GPZList mailing list submissions to
>    gpzlist at lists.micapeak.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>    https://lists.micapeak.com/mailman/listinfo/gpzlist
> or, via email, send a message with subject or body 'help' to
>    gpzlist-request at lists.micapeak.com
>
> You can reach the person managing the list at
>    gpzlist-owner at lists.micapeak.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of GPZList digest..."
>
>
> Today's Topics:
>
>   1. Chain & sprockets (William K Denton)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Oct 2025 14:47:34 -0400
> From: William K Denton <wkdenton at verizon.net>
> To: GPZ List <gpzlist at lists.micapeak.com>
> Subject: Chain & sprockets
> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
> Content-Type: text/plain; charset=utf-8
>
> Hello list,
>
> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>
> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>
> First, about the chain:
> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.
>
> Drive (front) 17T Sprocket:
> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.
>
> Driven (rear) 45 T Sprocket:
> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.
>
> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.
>
> Best regards,
> Bill Denton
> Yardley, PA
> 267-980-7788
> WKDENTON at VERIZON.NET
> Lazarus CycleWorks
> We Breathe New Life into Old Bikes
>
> Sent from my iPhone
>
>
> End of GPZList Digest, Vol 181, Issue 1
> ***************************************
______________________________________________________________________
GENERAL GPZList MAILING LIST INFORMATION:
This is from the GPZList mailing list. GPZList at lists.micapeak.com
https://lists.micapeak.com/mailman/listinfo/gpzlist
You subscribed to this mailing list. Therefore, you solicited all
mail that you receive from this list. Therefore, ANY mail that you
receive from this list is, by definition, NOT Spam, and if you report
it as such, you are violating the lists.micapeak.com terms of service.

To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
______________________________________________________________________
YOUR PERSONAL SUBSCRIBER OPTIONS:
Unsubscribe or choose new options at
https://lists.micapeak.com/mailman/options/gpzlist/sirdondiego%40outlook.com
You are subscribed at the email address Sirdondiego at outlook.com
______________________________________________________________________

From sirdondiego at outlook.com  Sat Oct 18 21:49:50 2025
From: sirdondiego at outlook.com (Don French)
Date: Sun, 19 Oct 2025 04:49:50 +0000
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>
References: <mailman.15.1760727620.21983.gpzlist@lists.micapeak.com>
 <30426AE2-76C8-46EA-86CE-0A3D4395D24B@gmail.com>
Message-ID: <BYAPR12MB3093603CDAEE576F4402FDF7B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>

Front Sprocket = JT.




________________________________
From: GPZList <gpzlist-bounces at lists.micapeak.com> on behalf of Charles Scappaticci <scapco at gmail.com>
Sent: Friday, October 17, 2025 3:39 PM
To: Don French <Sirdondiego at outlook.com>
Subject: Re: GPZList Digest, Vol 181, Issue 1

Hi Bill,

I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.

I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.

75k on my GPZ and climbing.

Charles S.

Sent from my iPhone

> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
>
> Send GPZList mailing list submissions to
>    gpzlist at lists.micapeak.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>    https://lists.micapeak.com/mailman/listinfo/gpzlist
> or, via email, send a message with subject or body 'help' to
>    gpzlist-request at lists.micapeak.com
>
> You can reach the person managing the list at
>    gpzlist-owner at lists.micapeak.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of GPZList digest..."
>
>
> Today's Topics:
>
>   1. Chain & sprockets (William K Denton)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Oct 2025 14:47:34 -0400
> From: William K Denton <wkdenton at verizon.net>
> To: GPZ List <gpzlist at lists.micapeak.com>
> Subject: Chain & sprockets
> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
> Content-Type: text/plain; charset=utf-8
>
> Hello list,
>
> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>
> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>
> First, about the chain:
> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.
>
> Drive (front) 17T Sprocket:
> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.
>
> Driven (rear) 45 T Sprocket:
> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.
>
> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.
>
> Best regards,
> Bill Denton
> Yardley, PA
> 267-980-7788
> WKDENTON at VERIZON.NET
> Lazarus CycleWorks
> We Breathe New Life into Old Bikes
>
> Sent from my iPhone
>
>
> End of GPZList Digest, Vol 181, Issue 1
> ***************************************
______________________________________________________________________
GENERAL GPZList MAILING LIST INFORMATION:
This is from the GPZList mailing list. GPZList at lists.micapeak.com
https://lists.micapeak.com/mailman/listinfo/gpzlist
You subscribed to this mailing list. Therefore, you solicited all
mail that you receive from this list. Therefore, ANY mail that you
receive from this list is, by definition, NOT Spam, and if you report
it as such, you are violating the lists.micapeak.com terms of service.

To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
______________________________________________________________________
YOUR PERSONAL SUBSCRIBER OPTIONS:
Unsubscribe or choose new options at
https://lists.micapeak.com/mailman/options/gpzlist/sirdondiego%40outlook.com
You are subscribed at the email address Sirdondiego at outlook.com
______________________________________________________________________

From wkdenton at verizon.net  Sun Oct 19 09:42:56 2025
From: wkdenton at verizon.net (William K Denton)
Date: Sun, 19 Oct 2025 12:42:56 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <BYAPR12MB3093D2D5A629B594401BF5E2B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
References: <BYAPR12MB3093D2D5A629B594401BF5E2B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
Message-ID: <88F880E4-6ECF-45E3-9414-B73A80B955AB@verizon.net>

Thanks Don!

Sent from my iPhone

> On Oct 19, 2025, at 12:40 AM, Don French <sirdondiego at outlook.com> wrote:
> 
> JT Sprocket Is what I used on my zzr12.
> It works well and has lasted 10 thousand miles.
> 
> 
> ________________________________
> From: GPZList <gpzlist-bounces at lists.micapeak.com> on behalf of Charles Scappaticci <scapco at gmail.com>
> Sent: Friday, October 17, 2025 3:39 PM
> To: Don French <Sirdondiego at outlook.com>
> Subject: Re: GPZList Digest, Vol 181, Issue 1
> 
> Hi Bill,
> 
> I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.
> 
> I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.
> 
> 75k on my GPZ and climbing.
> 
> Charles S.
> 
> Sent from my iPhone
> 
>> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
>> 
>> Send GPZList mailing list submissions to
>>   gpzlist at lists.micapeak.com
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>   https://lists.micapeak.com/mailman/listinfo/gpzlist
>> or, via email, send a message with subject or body 'help' to
>>   gpzlist-request at lists.micapeak.com
>> 
>> You can reach the person managing the list at
>>   gpzlist-owner at lists.micapeak.com
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of GPZList digest..."
>> 
>> 
>> Today's Topics:
>> 
>>  1. Chain & sprockets (William K Denton)
>> 
>> 
>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Fri, 17 Oct 2025 14:47:34 -0400
>> From: William K Denton <wkdenton at verizon.net>
>> To: GPZ List <gpzlist at lists.micapeak.com>
>> Subject: Chain & sprockets
>> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
>> Content-Type: text/plain; charset=utf-8
>> 
>> Hello list,
>> 
>> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>> 
>> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>> 
>> First, about the chain:
>> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
>> On the Enuma website, it says that EK50 chains a


From wkdenton at verizon.net  Sun Oct 19 09:43:38 2025
From: wkdenton at verizon.net (William K Denton)
Date: Sun, 19 Oct 2025 12:43:38 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <BYAPR12MB3093D2D5A629B594401BF5E2B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
References: <BYAPR12MB3093D2D5A629B594401BF5E2B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
Message-ID: <F988517A-E85A-4AB7-959D-16519EC56DBA@verizon.net>

Thanks Art!

Sent from my iPhone

> On Oct 19, 2025, at 12:40 AM, Don French <sirdondiego at outlook.com> wrote:
> 
> JT Sprocket Is what I used on my zzr12.
> It works well and has lasted 10 thousand miles.
> 
> 
> ________________________________
> From: GPZList <gpzlist-bounces at lists.micapeak.com> on behalf of Charles Scappaticci <scapco at gmail.com>
> Sent: Friday, October 17, 2025 3:39 PM
> To: Don French <Sirdondiego at outlook.com>
> Subject: Re: GPZList Digest, Vol 181, Issue 1
> 
> Hi Bill,
> 
> I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.
> 
> I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.
> 
> 75k on my GPZ and climbing.
> 
> Charles S.
> 
> Sent from my iPhone
> 
>> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
>> 
>> Send GPZList mailing list submissions to
>>   gpzlist at lists.micapeak.com
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>   https://lists.micapeak.com/mailman/listinfo/gpzlist
>> or, via email, send a message with subject or body 'help' to
>>   gpzlist-request at lists.micapeak.com
>> 
>> You can reach the person managing the list at
>>   gpzlist-owner at lists.micapeak.com
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of GPZList digest..."
>> 
>> 
>> Today's Topics:
>> 
>>  1. Chain & sprockets (William K Denton)
>> 
>> 
>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Fri, 17 Oct 2025 14:47:34 -0400
>> From: William K Denton <wkdenton at verizon.net>
>> To: GPZ List <gpzlist at lists.micapeak.com>
>> Subject: Chain & sprockets
>> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
>> Content-Type: text/plain; charset=utf-8
>> 
>> Hello list,
>> 
>> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>> 
>> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>> 
>> First, about the chain:
>> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
>> On the Enuma website, it says that EK50 chains a


From c_p_bowen at yahoo.com  Sun Oct 19 18:36:43 2025
From: c_p_bowen at yahoo.com (Christopher Bowen)
Date: Sun, 19 Oct 2025 21:36:43 -0400
Subject: GPZList Digest, Vol 181, Issue 1
In-Reply-To: <BYAPR12MB3093603CDAEE576F4402FDF7B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
References: <BYAPR12MB3093603CDAEE576F4402FDF7B1F4A@BYAPR12MB3093.namprd12.prod.outlook.com>
Message-ID: <D4ED8A8F-1829-4093-BC41-75D3D25F4E2C@yahoo.com>

Still here!
Still have the GPZ!
But it needs some TLC…reassemble carbs, new air filter, pray it fires 😁
I think of other bikes sometimes, but never enough to switch or splash out.
A Blackbird would be sweet, but the R 1250-RT keeps catching my eye….
-Chris in PA
‘95 GPZ

> On Oct 19, 2025, at 12:50 AM, Don French <Sirdondiego at outlook.com> wrote:
> 
> Front Sprocket = JT.
> 
> 
> 
> 
> ________________________________
> From: GPZList <gpzlist-bounces at lists.micapeak.com> on behalf of Charles Scappaticci <scapco at gmail.com>
> Sent: Friday, October 17, 2025 3:39 PM
> To: Don French <Sirdondiego at outlook.com>
> Subject: Re: GPZList Digest, Vol 181, Issue 1
> 
> Hi Bill,
> 
> I still have my GPZ, rode it to Daytona in March from Greensboro NC.  I can’t remember what chain I have sitting, waiting for my next chain as I’m in Daytona again but on my Pan America ST.
> 
> I was lucky to get one of the last OEM front sprockets in for that next change, which hopefully will be a while.
> 
> 75k on my GPZ and climbing.
> 
> Charles S.
> 
> Sent from my iPhone
> 
>> On Oct 17, 2025, at 3:00 PM, gpzlist-request at lists.micapeak.com wrote:
>> 
>> Send GPZList mailing list submissions to
>>   gpzlist at lists.micapeak.com
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>   https://lists.micapeak.com/mailman/listinfo/gpzlist
>> or, via email, send a message with subject or body 'help' to
>>   gpzlist-request at lists.micapeak.com
>> 
>> You can reach the person managing the list at
>>   gpzlist-owner at lists.micapeak.com
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of GPZList digest..."
>> 
>> 
>> Today's Topics:
>> 
>>  1. Chain & sprockets (William K Denton)
>> 
>> 
>> ----------------------------------------------------------------------
>> 
>> Message: 1
>> Date: Fri, 17 Oct 2025 14:47:34 -0400
>> From: William K Denton <wkdenton at verizon.net>
>> To: GPZ List <gpzlist at lists.micapeak.com>
>> Subject: Chain & sprockets
>> Message-ID: <05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>
>> Content-Type: text/plain; charset=utf-8
>> 
>> Hello list,
>> 
>> I hope I’m not the only person left on this list that actually owns a GPZ 1100 in North America lol.
>> 
>> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain and sprockets and I’ve come up against a little situation that I’m sure you all already know the answer to.
>> 
>> First, about the chain:
>> My chain is the original stock EK50UV – XX112L, manufactured by Enuma in Japan.
>> On the Enuma website, it says that EK50 chains are “generically equivalent to 520 chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I verified the 5/8” pitch value, but when I measured the chain width, it measures 3/8” between the inner plates, which would make it a 530 chain, not a generically equivalent 520 chain as Enuma’s website claims. Please explain. Also looking for experience based replacements for the OEM chain.
>> 
>> Drive (front) 17T Sprocket:
>> This sprocket is NLA from momma Kaw, so I’m looking for generic equivalents for this item that are otherwise identical to the OEM piece.
>> 
>> Driven (rear) 45 T Sprocket:
>> Although this sprocket is still available from momma Kaw, I’m thinking that there are other equivalent alternatives to the $119 OEM piece. Experience based suggestions encouraged and appreciated.
>> 
>> That is all, and I appreciate any insight and recommendations based on your own experiences. I look forward eagerly to your replies.
>> 
>> Best regards,
>> Bill Denton
>> Yardley, PA
>> 267-980-7788
>> WKDENTON at VERIZON.NET
>> Lazarus CycleWorks
>> We Breathe New Life into Old Bikes
>> 
>> Sent from my iPhone
>> 
>> 
>> End of GPZList Digest, Vol 181, Issue 1
>> ***************************************
> ______________________________________________________________________
> GENERAL GPZList MAILING LIST INFORMATION:
> This is from the GPZList mailing list. GPZList at lists.micapeak.com
> https://lists.micapeak.com/mailman/listinfo/gpzlist
> You subscribed to this mailing list. Therefore, you solicited all
> mail that you receive from this list. Therefore, ANY mail that you
> receive from this list is, by definition, NOT Spam, and if you report
> it as such, you are violating the lists.micapeak.com terms of service.
> 
> To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
> ______________________________________________________________________
> YOUR PERSONAL SUBSCRIBER OPTIONS:
> Unsubscribe or choose new options at
> https://lists.micapeak.com/mailman/options/gpzlist/sirdondiego%40outlook.com
> You are subscribed at the email address Sirdondiego at outlook.com
> ______________________________________________________________________
> ______________________________________________________________________
> GENERAL GPZList MAILING LIST INFORMATION:
> This is from the GPZList mailing list. GPZList at lists.micapeak.com
> https://lists.micapeak.com/mailman/listinfo/gpzlist
> You subscribed to this mailing list. Therefore, you solicited all
> mail that you receive from this list. Therefore, ANY mail that you
> receive from this list is, by definition, NOT Spam, and if you report
> it as such, you are violating the lists.micapeak.com terms of service.
> 
> To unsubscribe, you may send email to gpzlist-unsubscribe at lists.micapeak.com
> ______________________________________________________________________
> YOUR PERSONAL SUBSCRIBER OPTIONS:
> Unsubscribe or choose new options at
> https://lists.micapeak.com/mailman/options/gpzlist/c_p_bowen%40yahoo.com
> You are subscribed at the email address C_P_BOWEN at yahoo.com
> ______________________________________________________________________