Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed PLP|EMTB Optimised The side plates are forged

The side plates are forged into a smooth ergonomic shape and anodised in the Park Blue to finish it off

Available in four sizes: Small 1

Amino Glutamine increases glycogen storage

Includes 1 x 16g CO2 cartridge

Garmin Forerunner 405CX

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed PLP|EMTB Optimised The side plates are forgedThe 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