Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed algolia-ignore Only for use with Low

Only for use with Low Viscosity Oil for consistent viscosity over a wide temperature range ensuring stable piston movement and constant lever stroke

The Razers will leave your hands feeling great

Just swap and Go

With the widespread use of dropper posts

Only for use with Presta valves and threaded cartridges

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed algolia-ignore Only for use with LowThe Prime 9 range of components from Box has made many people rethink what a 9 speed drivetrain is capable of. Providing riders with all the range of a 12 speed setup but without the complexity, weight, and excessive shifting, Prime 9 drivetrains are also far more affordable. You can ride them hard and not shed so many tears when something inevitably wears out or breaks. Box Three is their best all rounder drivetrain that offers excellent performance