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Z1000A1 rear master cylinder leaks but with new seals
Posted: Thu Jun 12, 2025 3:58 pm
Author: TiBolts
Hi Zedheads. Blimey getting this project over the line is doing my head in. It's just one problem after another. I put a new primary cup (from Zed Power) in and I thought that I'd put all new seals in but due to my advancing years I misremembered I think. Anyway, it's leaking but Zed Power don't list the secondary cup. Any recommendations on a replacement? I see WeMoto list one.
The bore in the master cylinder looks good. I will finish this bike one day!
Re: Z1000A1 rear master cylinder leaks but with new seals
Posted: Thu Jun 12, 2025 6:59 pm
Author: r3sc
I think the seal in question comes with the piston and if I remember correctly ZP do list both a pattern one and an OEM option which is quite expensive.
I’ve used parts from ZP and Wemoto and I’ve never had any problems but if you feel the need to purchase OEM it comes at a cost and ZP can hopefully help.
Re: Z1000A1 rear master cylinder leaks but with new seals
Posted: Fri Jun 13, 2025 4:06 pm
Author: TiBolts
Ah yes thanks I see ZP do show one but it just says Z1000/1100 and doesn't specify models. It looks slightly different to the original - but it does look the same as the Wemoto one. But ZP's is cheaper! I'll call them on Monday and order it if it's the right one.