Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_7033405964333 Weight: 112g per pair

Weight: 112g per pair

Lightweight single-ply casing

It works with Hollowtech II and 2 piece cranks

They not only have great stopping power but have some great features like a long reach lever that is adjustable

these will stay in place and remain comfortable as you ride

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed YGroup_7033405964333 Weight: 112g per pairThe 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