TRP HY/RD Mechanical/Hydraulic Disc Brake Caliper - Pair TRP HY/RD disc brake calipers have the power and modulation of hydraulic disc brakes. True ‘plug-and-play’ compatibility with existing cable actuated systems. • 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 • Weight: 205g per caliper • 2-Piston caliper • Intended rotor thickness: 1.8mm Brake Caliper Type: Flat Mount Brake Lever Actuation: Hydraulic Brake Lever Actuation: Short Pull Defined Color: Black Hydraulic Fluid Type: Mineral Oil Pad Compound: Semi-Metallic $140 for the pair