mike042 Posted July 24 Share #1 Posted July 24 2011 RSV I'm changing the seals in rear brake caliper, are there 2 different sizes of the 4 pistons? I was ordering the seal kits from partzilla and seems to be two different part numbers. Link to comment Share on other sites More sharing options...
Marcarl Posted July 24 Share #2 Posted July 24 I only see one kit. Cheaper at: https://www.yamahasportsplaza.com/oemparts/a/yam/5004d6cef87002275461d662/rear-brake-caliper Link to comment Share on other sites More sharing options...
Marcarl Posted July 24 Share #3 Posted July 24 4 minutes ago, Marcarl said: I only see one kit. Cheaper at: https://www.yamahasportsplaza.com/oemparts/a/yam/5004d6cef87002275461d662/rear-brake-caliper On a second look, there does seem to be 2 numbers that are needed to complete the rebuild. Somebody more knowledgeable needs to chime in here. Link to comment Share on other sites More sharing options...
BratmanXj Posted July 24 Share #4 Posted July 24 There were Inner & Outer seals on mine, but its been a few years since I've been in there. I bought a complete rebuild kit from All Balls when I did mine https://www.allballsracing.com/18-3194.html 1 Link to comment Share on other sites More sharing options...
Marcarl Posted July 24 Share #5 Posted July 24 6 hours ago, BratmanXj said: There were Inner & Outer seals on mine, but its been a few years since I've been in there. I bought a complete rebuild kit from All Balls when I did mine https://www.allballsracing.com/18-3194.html There you go! Good answer! Link to comment Share on other sites More sharing options...
mike042 Posted July 26 Author Share #6 Posted July 26 Yes I know there are 2 seals on each piston. I ordered 1 of each part number, they just came and matching them to each other they look identical. So I don't know why the numbers are different but at least I have all the seals I need . Just another mystery of partzilla Link to comment Share on other sites More sharing options...
Marcarl Posted July 26 Share #7 Posted July 26 The one seal would be grooved, the other I think is flat. Grooved to the outside. Link to comment Share on other sites More sharing options...
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