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Z900A4 Front brakes

Posted: Wed Aug 05, 2020 12:41 pm
Author: RALPHARAMA
I'm starting a big resto on a Z900A4.

The front master cylinder has been painted with some sort of paint that it clearly wrong. When extracting it in the bead blast cabinet there is some plating/coating that at first I took to be chrome/nickle, but am wondering if it's some form of anodising where the dye colour has faded away due to UV.

It has twin discs up front, what diameter pistons should they have in them?

Re: Z900A4 Front brakes

Posted: Thu Aug 06, 2020 3:13 pm
Author: tlc
When I had mine done, black anodised yes, I was warned about the process possibly damaging the alloy.
It did create a small cavity but was well down below the seals. Be aware.

Re: Z900A4 Front brakes

Posted: Tue Aug 18, 2020 10:15 am
Author: nail
Hi Ralph
I think the front calliper piston sizes are 42mm ? If my memory serves me right. I picked mine up off the wemoto site £42 for the pair in 2009 me thinks they have gone up a wee bit since then.
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Re: Z900A4 Front brakes

Posted: Tue Aug 18, 2020 12:02 pm
Author: Martin B
I have recently purchased front and rear brake piston and seal kits from this company. I can’t speak highly enough about their advice and product quality.
https://www.ebay.co.uk/usr/powerhouse-u ... 2749.l2754

Re: Z900A4 Front brakes

Posted: Tue Aug 18, 2020 12:34 pm
Author: wheelysteve
Martin B wrote:I have recently purchased front and rear brake piston and seal kits from this company. I can’t speak highly enough about their advice and product quality.
https://www.ebay.co.uk/usr/powerhouse-u ... 2749.l2754


+1. Top notch service and parts

Re: Z900A4 Front brakes

Posted: Tue Aug 18, 2020 5:32 pm
Author: Bill P
+1 for Powerhouse , been using for years. Picked my Calipers and Master Cyls up yesterday for GS1000S project