(Rotor & Bracket Sold Separately)If you believe in better performance then you should believe in hydraulic road (HydroR) brakes. We at SRAM believe - our competition has followed, so they clearly believe - as do our professional and amateur athletes. Quite simply, our 2015 HydroR technology is the fulfillment of the promise of better braking, more control, and improved performance in all conditions.Optimized power & modulation for road,Quick Release,Tools-free contact point adjust,Tire clearance: 28c,Firecrest rim compatibility (27.4mm),387 grams per wheel (Lever, Caliper, Housing 600mm).