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Right hand side Caliper Z1000A2

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skinnyZED
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Joined: 28th Nov 2023
Location: Cambridgeshire

Right hand side Caliper Z1000A2

#1 PostAuthor: skinnyZED » Thu Oct 09, 2025 6:21 am

Hi all,
Does anyone have a right hand brake caliper and bracket to match the attached Z1000A2 that they would be willing to sell?
postage to Cambridgeshire, bleed would be at the top and bolted behind fork leg,
BTW, What size are the pistons?
Any help appreciated
Stuart
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warren3200gt
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Re: Right hand side Caliper Z1000A2

#2 PostAuthor: warren3200gt » Thu Oct 09, 2025 10:33 am

I've got several 650/900/1000 calipers in various states. I think the 1000 has 44mm pistons and the 650 has 38mm. I'll have look and see if I have what your after.
If you get down to nw Kent your welcome for a cuppa and browse.
PUM 488 June 2026
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.

skinnyZED
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Joined: 28th Nov 2023
Location: Cambridgeshire

Re: Right hand side Caliper Z1000A2

#3 PostAuthor: skinnyZED » Fri Oct 10, 2025 8:29 am

Thanks for the reply,
If you could let me know what you have available, that would be really appreciated,
I’m building up a few jobs for this winter and will be using new braided hoses, stainless fittings etc
Cheers, Stuart

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warren3200gt
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Re: Right hand side Caliper Z1000A2

#4 PostAuthor: warren3200gt » Sat Oct 11, 2025 9:52 am

I've 2 right hand behind leg 38mm piston but no 43mm.
PUM 488 June 2026
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.

skinnyZED
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Posts: 24
Joined: 28th Nov 2023
Location: Cambridgeshire

Re: Right hand side Caliper Z1000A2

#5 PostAuthor: skinnyZED » Sun Oct 12, 2025 11:25 pm

Ok thanks anyway, I saw some 38mm ones a few weeks ago and wondered what would happen if you had 1x44 (or 43) & 1x38,
It looks like I’ll possibly be doing the valve stem seals & hone plus new rings anyway, that’s going to take priority,
I am having to top the oil up quite often, and my compression reading are a bit borderline 100/110/90/110,
Cheers,
Stuart

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warren3200gt
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Re: Right hand side Caliper Z1000A2

#6 PostAuthor: warren3200gt » Mon Oct 13, 2025 10:31 am

Or go 38 left and right. Don't think you'd notice much difference unless your going single to twin then it'd be an improvement over single 43.
PUM 488 June 2026
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.

skinnyZED
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Posts: 24
Joined: 28th Nov 2023
Location: Cambridgeshire

Re: Right hand side Caliper Z1000A2

#7 PostAuthor: skinnyZED » Tue Oct 14, 2025 7:39 am

Hmm that works,
Is there an easy way to see which models have 43mm and which would have originally had 38mm?
Thanks
Stuart

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warren3200gt
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Re: Right hand side Caliper Z1000A2

#8 PostAuthor: warren3200gt » Tue Oct 14, 2025 8:09 am

Twin 38's will give you 42% increase in piston surface area over single 43.
650/750 and smaller would be 38's
PUM 488 June 2026
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.

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Simonic
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Re: Right hand side Caliper Z1000A2

#9 PostAuthor: Simonic » Tue Oct 14, 2025 10:51 am

Dave Marsden has one here at Z-Power.
If you would like it please give him a call on
01942-262864
Cheers
1982 Z1000J,1984 Z1000J,2018 Z900RS Cafe,2019 Dodge Challenger Hemi


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