Shimano Rear Disc Brake Acera BR-MT420 4-Piston with BL-MT401 Left Lever

Great value fully bled 4 piston hydraulic disc brake with easily adaptable post-style calliper. Fully bled lever and 4 pot calliper comes without adapters or rotors giving you the freedom to customise to suite your bike. Can be used with the revolutionary Center Lock rotor system which fits easily to Center Lock compatible hubs; alternatively conventional 6-bolt rotors can be used all in a choice of 160 mm, 180 mm. Mineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluid. For use with resin pads only