The Shimano Deore M6200 4-piston disc brake pairs the BL-M6200 SERVO WAVE lever with the BR-M6220 4-piston caliper for a complete hydraulic brake system. SERVO WAVE delivers rapid pad contact and a progressive power curve, while the dual diameter 4-piston caliper provides the stopping power and control for demanding trail and enduro use. What Our Gearhead(R) Experts Are Saying:"The lever and caliper work together to give a brake feel that's powerful when the terrain demands it and easy to modulate when precision matters more. Setting up a complete Shimano brake system means the components are tuned to work together from the first bleed."