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Piston failure doesn't have to mean the end of the caliper's life. With the rebuild kit we provide, you can replace the pistons and revive the life of your brake caliper.
The kit is compatible with many Shimano models including SLX M675 M7000 M7100, XT M785 M8000 M8100, XTR M9020 M9000 M9100 and road bike calipers such as R7070 R8070 R9170 RS785 RS805
Features:
- Rebuild kit for Shimano hydraulic disc brake calipers
- Made of aluminum and high-temperature resistant material.
- No leakage, slotted design for increased contact area and improved heat dissipation
- One order comes with 2 pistons and various sealing O-rings (for one caliper service)
One order comes with 2 pistons and various sealings for one caliper service
Size and Weight
Samir Eduardo Garcia Aldana
Reviewed in the United States on March 11, 2025
Muy buena calidad, los monté hace un mes aprox y funcionan muy bien, recomendados para cambiar los de porcelana originales que son frágiles
Jason
Reviewed in the United States on September 24, 2024
Good fit in the caliper. O-rings are identical to original shimano. initial install and bleed was successful. I'll update after some test riding if there are any issues
MikeRock
Reviewed in the United States on June 8, 2024
Installed this piston kit into my m8000 caliper after noticing a cracked piston (crunchy sound from the caliper). Cleaned the caliper with brake clean and air. Oiled the seals. Piston pushed in easy. I thought great. bled my brakes. press the brakes and it seemed to work. Pressed again and its getting harder. press a few more times and there is no more lever movement. Looked at the pistons and they are not retracting. bled again. Same problem. tried like 5 more times. Problem is the piston kept pushing threw the seal and not retracting. Tried Oem and package seals. The same thing happened. Measured These are 21.9mm shimano 22mm.for testing cause this was driving me crazy. I tried installing back the oem pistons. one good one and the cracked one. the pistons were nearly impossible to put back in without my vise. Drastic difference. Bled and my brakes work perfect again. this drove me nuts for like 3 hours. i know riding with a chipped piston is probably not a smart thing to do. there seemed to be enough meat on the piston not to leak oil. im preying it holds up till i can get another caliper here.I so wanted this to work as this is on my spare bike and dont like to spend a lot of money maintaining a bike that might see 500-1000 miles a year. $20 seemed a lot better than a $60 caliper but between all the brake fluid and time i wasted. I should have just bought a new caliper from the start and had some spare parts. Great idea. Poor execution.Edit…. If you read this. Bought aftermarket ceramic ones and the are perfect.
Chris
Reviewed in the United States on April 9, 2024
Quick and easy replacement for Shimano Deore Brakes. Fits perfect works like original so far.
PAB
Reviewed in the United States on August 28, 2023
Worked like hoped. Much better solution than full caliper replacment when you are talking about XTR.
MatthewN.
Reviewed in the United States on May 27, 2023
Have a cracked ceramic piston? THESE WORK GREAT. Easy to install too. Push the old piston out, remove the old seal, clean the caliper with brake clean. Install the new seal. Lube seal and piston. Careful to push piston in squarely. Reassemble caliper and attach hose. Bleed and go RIDE.Just buy and rebuild that caliper. 😎
JP P.
Reviewed in the United States on February 28, 2023
The pistons were used on a 2020 Shimano 8100 that blew on the trail. Not downhil. Not even Enduro. Just a short trail ride on Santos in Ocala FL. Thought we were buying new calipers. Nope. These snapped in using the new gaskets. The old one was destroyed by the shattered ceramic. So far 12 miles with great results. Gonna replace the front cause losing a caliper on the trail sucks. As many of us Shimano users seem to know.
MeatBall
Reviewed in the United States on April 29, 2022
The piston itself is too thick. Leading to a tighter fit for my brake which require me to file down my new brake pads. Compare to other piston replacement on Amazon, this one included many gaskets, but they don't fit my Ultegra so I have to reuse the old ones. Overall it is a good replacement if you are willing to put in the work to make it fit. Probably will buy again.
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