Spyder VELO Aero Road Bike Helmet - Matte Black / Red Size:L/XL (58-62cm) these 10-45 and 10-51T cassettes

these 10-45 and 10-51T cassettes deliver advanced shifting performance

SHIMANO's SL-M315 RAPIDFIRE shift lever is suited to quick shifting

SX sram shifter 12speed

(SP-15) Recharge/discharge number of times： about 300 times（until the rated capacity drops to 70%） Water resistant： [AMPP500] IPX4

Spyder VELO Aero Road Bike Helmet - Matte Black / Red Size:L/XL (58-62cm) these 10-45 and 10-51T cassettesProduct description Every watt counts. The Velo is built with aero in mind. Delivering uncompromising performance, innovation, fit and comfort. Built to provide outstanding protection while pushing the boundaries of aerodynamics, the Velo delivers the peace of mind you need to focus completely on the road ahead. Technical Specification Air Stream Vent System CE Compliant Fidlock Road Shocpad Road Muck Mesh