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RacingBrake stainless brake pistons installed

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Old Oct 13, 2012, 10:48 AM
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RacingBrake stainless brake pistons installed

I've used many different types of pads, DTC60, XP10, DSUNO, ST43, ST47, RC6, along with Amsoil brake fluid. the brake pedal often get soft towards the end of the day.

i picked up these RB stainless pistons and seals from my sponsor.
ss pistons - http://www.shop.motorsportsperforman...per-BM-41P.htm
seals - http://www.shop.motorsportsperforman...rs-BM-41BS.htm

OE 46mm pistons = 0.18 lbs, RB SS = 0.225 lbs; .045 difference
OE 40mm pistons = 0.14 lbs, RB SS = 0.19 lbs; .05 difference

that's a total of 0.19 lbs (1/5 lbs) difference for all four pistons for one caliper.






oem dust seals all burned and cracked


opening up the calipers


caliper split in half


oem pistons next to stainless pistons


use compress air at the bride port and a used pad underneath to prevent one piston from coming out complete and not allow the other one to come out.


remove the oem dust seals


remove oem piston seals


clean out caliper


new stainless pistons and dust seals ready to go in


lubricate the pistons with some brake fluid so they slid in easy


all four pistons are in and ready for reassemble


i'll be at Watkins Glen next weekend for NASA TT to try them out first time on track. wanted to try them at Summit Point this weekend but my turbo didn't get back yet.

Last edited by honda-guy; Oct 15, 2012 at 04:29 PM.
Old Oct 13, 2012, 11:17 AM
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Very interested to see how these will hold up compared to the OEM's.

Nice write-up with great pictures!
Old Oct 13, 2012, 03:39 PM
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Very nice!

I need to replace my boots and seals here soon, too.
Old Oct 14, 2012, 11:08 AM
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Hmm...I have the Brembo seal kit already. Do you think it'll work with those pistons? Or is the kit you linked specific to them?
Old Oct 14, 2012, 11:20 AM
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these stainless pistons are designed to work with OEM seals, so your brembo seals kit should work.
Old Oct 14, 2012, 11:30 AM
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Nice! I think I'll definitely pick these up then. Thanks for the write-up
Old Oct 14, 2012, 11:53 AM
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^ would help me out if you pick them up from my sponsor
Old Oct 14, 2012, 12:01 PM
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interesting.. ive never rebuilt calipers, but im curious what did you mean about using compressed air and placing the pad underneath?
Old Oct 14, 2012, 12:20 PM
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The pistons come out very easy when you apply compressed air into the bleeder nipple hole or the banjo bolt hole.
Old Oct 14, 2012, 12:36 PM
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Originally Posted by jmcmill3
interesting.. ive never rebuilt calipers, but im curious what did you mean about using compressed air and placing the pad underneath?
if you don't put something under the pistons to prevent one from coming out completely, then the other one wont come out. the pistons will be almost completely out, you'll just have to wiggle them to get them out all the way

Last edited by honda-guy; Oct 14, 2012 at 12:41 PM.
Old Oct 14, 2012, 12:41 PM
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thanks for the heads up... i want to redo my brembos and this seems like a great rebuild for after coating
Old Oct 14, 2012, 01:44 PM
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Very interesting, looking forward to feedback after your next day at the track.
Old Oct 15, 2012, 05:15 AM
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Nice! Why did you split the caliper? You don't need to do it for replacing seals & pistons.
Old Oct 15, 2012, 05:28 AM
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^ it's easier just to split the calipers. it's not that much more work. are you done with track this year.
Old Oct 15, 2012, 05:43 AM
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Alwayshelpingoutthecommunity.

Nice write up, B!


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