Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_15111207387181 and use a single clamp

and use a single clamp

the Xmatter inserts offer a terrific amount of protection while being flexible and comfortable

What does it include: Includes 6 Allen keys: 2

and re-forms at the end to prevent twisting

for 1/8" fixed gear sprockets

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_15111207387181 and use a single clampThe 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