SRAM S-900 AERO HRD DISC BRAKE Mount:Right All models feature SRAM wireless

All models feature SRAM wireless electronic shifters and an integrated taillight

1-1/8" top

Features Trek Jet 16˝ Kids Wheel

Single-bolt seat clamp design

Threaded battery easily screws into headlight body

SRAM S-900 AERO HRD DISC BRAKE Mount:Right All models feature SRAM wirelessThe SRAM S 900 Aero HRD is unconditional braking for unconditional riders. Hydraulic aero brakes also allow for more aerodynamic frame designs, lower hand effort, shorter braking distances, and easier changes between wheelsets. For aero disciplines, hydraulic disc brakes can reveal a whole new world of speed savings. Less time slowing down means more time going fast. Better brakes mean faster splits, thanks to confidence inspiring brake performance.