TRP Quadiem Disc Brakes. All mountain/DH disc brake system with enhanced stopping power and modulation. All-mountain two piece rotor on alloy center carrier. Resin with Metal Fibers pads are compatible with Resin-Only type rotors as well as standard rotors. High Polish Gray color. Lever reach adjustments. In-line master cylinder. Brake pad composite is Resin with Metal Fibers. 350g per wheel (excluding mounting hardware). Alloy lever blade. Four piston caliper. Rotor weight: 172g (Two piece 180mm). Color: Black. Weight: 350. Hub/Disc Compatibility: 6-Bolt Disc. Rotor Size: 180. Brake Lever Use: Left. Hydraulic Hose Length: 800. Defined Color: Black.