Sidekick GR Rear MTB Hub Driver:XD Driver Flux GR 72 TPI dual-ply

Flux GR 72 TPI dual-ply casing with GR Apex sidewall inserts

tool-free on-the-trail maintenance

and these replacement parts are designed for use with 9-34t

Helix Race Cranks include our newest APS preload adjuster system and custom crank strike boots to keep these beauties looking fresh

completely rebuildable

Sidekick GR Rear MTB Hub Driver:XD Driver Flux GR 72 TPI dual-plyThe e*thirteen Sidekick GR Rear MTB Hub features a unique anti kickback drive mechanism with adjustable deadband, providing smooth suspension performance, reduced fatigue, and nearly silent operation for an unparalleled riding experience. Designed and tested with the world's top teams and racers over multiple seasons, the Sidekick GR offers the broadest driver compatibility in the lineup across Boost 148mm and 157mm (DH, Superboost) spacing. The