Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_15111207387181 Weight 198 g / 6

Weight    198 g / 6

and use a single clamp

BYO mounting bolts

for 1/8" fixed gear sprockets

Rotational liner: Yes

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_15111207387181 Weight 198 g / 6The 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