ABEC-3 radial suspension bearing - 15 x 28 x 7mm

It's designed to go into frames with an internal diameter of 44mm

Oil tolerant

flexible hose

Labyrinth style spacers encapsulating/protecting the bearings

Box Three Prime 9 Speed Groupset - Single Shift - X-Wide 12-50T - 9 Speed netsuite-webdata-created ABEC-3 radial suspension bearing -The 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