The power & modulation of hydraulic disc brakes yet compatible with any cable actuated lever system. Sold individually SYSTEM WEIGHT: 195g per wheel ROTOR WEIGHT: 89g (160mm) PADS: TRP-BP-B20.11 Hydraulic system self-adjusts for pad wear Self-contained caliper incorporates master cylinder Cable actuation means compatibility with all mechanical road & CX brake levers Composite pistons isolate heat better