SRAM S900 Aero Disc Brake and Lever - Rear Hydraulic Flat Mount Black A1 Model=REACT 10-Speed HG Cassette 3/8" drive interface

3/8" drive interface

the Spur requires no adjustment to descend like you're used to

Power Polymers™ advanced wax blend and 2-Step Carrier™ solvent technology

Wolf Tooth BSA Bottom Brackets are engineered to be smooth

Solid shifting performance for both Road and Mountain applications

SRAM S900 Aero Disc Brake and Lever - Rear Hydraulic Flat Mount Black A1 Model=REACT 10-Speed HG Cassette 3/8" drive interfaceSRAM S900 Aero Disc Brake and Lever Rear Hydraulic Flat Mount Black A1. For aero disciplines hydraulic disc brakes can reveal a whole new world of speed savings. Less time slowing down is more time going fast. Better brakes mean faster splits thanks to confidence inspiring brake performance. Optimized power and modulation for triathlon and time trial HydroT brake platform offers superior control feel and heat management Textured carbon brake lever for