Yfashion M4 Four-piston Hydraulic Oil Disc Brake Mt420 Cycling Accessories For Mtb Bike
- --he dual-brake four-piston piston directly ransmits he oil pressure o he brake block o keep he brakes stable and make he brake ransmission more efficient..
- --22.2mm is basically suitable for he installation of models on he market.
- --he stroke of he brake lever oil pump is adjustable o control he pump oil volume and stroke.
