Sram red22 shifthydraulic rim brake 11 speed rear lever front brake key features optimised power and modulation for road quick release tools free contact point adjust tyre clearance 28c firecrest rim compatibility 274mm technical specifications weight 387 grams per wheel lever caliper housing 600mm lever material forged aluminium arms pad swissstop compound fluid dot 51 technology highlights hydror compatibility sram red 22 hydraulic shift brake levers