The Hope RX4+ Mineral Oil Caliper draws on 25 years of experience designing and manufacturing hydraulic disc brakes, and transfers that knowledge into the world of road and cyclocross drop bar brakes. A precision CNC machined monobloc design results in a stiffer caliper to give unmatched feel and modulation. Monobloc design creates a stiffer caliper reducing fuzzy lever feel and brake pad rub. Slim 4-piston lightweight design provides reliable and powerful braking. CNC machined from high quality 2014-T6 aluminum offers high strength with the benefit of weight savings. Fully serviceable design for extended lifeTop entry pad attachment makes removal or installation simple and quick. Versatile design fits 140, 160, and 180mm rotors. Mineral oil caliper will have hole caps with an "M" on it. Item Specifics: Post mount type brake caliper. Brake lever actuation. Hydraulic ColorBlackDefined ColorBlackHydraulic Fluid TypeMineral OilRotor IncludedNo