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Caliper rebuild question

NPS

NPS

Cruisin' Guzzisti
GT Contributor
Joined
Dec 11, 2008
Messages
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Location
Churchdown, Gloucester, UK
I have corroded brake pistons on the B11 and need to replace them and the seals.
The brake is a P4:3040D from Guzziology.
I think the brembo piston and seal kit is 120.2799.50. Please would someone confirm this part number, thanks.

I might need to do the rear too but cant find the bake code or seal kit number. Can anyone help?
 
I made a wrong assumption about the seal and piston kit. Apparently, there is no such service item for these brakes and a new caliper must be purchased!.
 
You had me hopeful for a moment! Then saw your second post that confirms the current situation. Aren't the pistons anodized aluminum? These should clean up. No?

Yoyodyne has a "universal" seal kit for 30/34 pistons. I'm thinking they don't list the application as a matter of avoiding liability. http://www.yoyodyneti.com/ProductInfo.aspx?productid=YB3034 Haven't had a need to try them yet though.

Since no Brembo kit is available, I've been cleaning the protruding surface of the pistons with a Q-tip and brake fluid, then pushing in the pistons for a bleed once a year.
 
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