TRP Slate T4 Disc Brake (HD-M806). Features: Intended use is Enduro/All Mountain/Trail 4-piston forged caliper w/ 2-16mm & 2-14mm stainless pistons Aaron Gwin designed alloy lever blade Tool-free reach adjustment EZ-Plug system: pre-bled and plugged at both ends of the 5.0 x 1900mm hose (F & R); extra olive and barb included Semi-Metallic brake pads included Rotor and adapter sold separately All TRP hydraulic brakes use mineral oil Specs: Kit:right Caliper:74mm Rotor:seperate Color:black Weight:270g