e*thirteen Helix Race 12-Speed 13-52T Cassette - Bronze Sheppards The respective length of the

The respective length of the mounting bolts for the HR brake caliper must be selected based on the thickness of the chain stay

As well as this

11x34 Chain Shimano Ultegra Crankset Shimano Ultegra

The RaceRocket® HP mounts to frame with included bracket

Lighter Tr90 frame

e*thirteen Helix Race 12-Speed 13-52T Cassette - Bronze Sheppards The respective length of theAt e*thirteen, we're always striving to bring something new to the table. That's why we created the Helix cassette line to offer unparalleled cross compatibility without sacrificing performance. As e bikes have become more popular, we set out to engineer a close ratio cassette specifically for them. Enter the Helix Race 13 52T a 12 speed close ratio cassette specifically engineered for steep terrain where climbing speeds are high and descents are