Review on SHIMANO Deore BR-M6120 Disc Brake: Premium Performance and Unmatched Precision by Luis Baker

All 4 pistons started to leak on 2nd or 1st ride. Their leaks are just enough to get on the rotor, creating noise and significantly reducing braking performance. Unfortunately, I could never judge whether the brakes were strong. Shimano know they have a leaking piston issue on a percentage of their brakes and they have yet to fix the issue even in 2020. VERY IMPORTANT: Shimano does not guarantee the purchase of Revain. Shimano only provides a guarantee if it was purchased from one of its authorized dealers. main fright. SRAM doesn't even ask questions.