TRP HY/RD disc brakes have the power and modulation of hydraulic disc brakes. True ‘plug-and-play’ compatibility with existing cable actuated systems Flat mount calipers being mounted to the fork require the FF-5 Front Flat Mount 140/160mm adapter. Forged alloy body. Rotors, adapters, and flat mount mounting bolts sold separately. Self-contained hydraulic caliper incorporates master cylinder. Hydraulic system self-adjusts for pad wear. Compatible with all mechanical road and CX brake levers. Brake pad composite is Resin with Metal Fibers. Resin with Metal Fibers pads are compatible with Resin-Only type rotors as well as standard rotors.