BikeHard Challenger Carbon Ceramic Bearing Upgrade KitThe BikeHard Challenger Carbon ceramic bearing upgrade kit includes all 6 bearings to upgrade front hub, rear hub shell, and free hub body. Includes 6900 x2, 6802 x2, and 6902 x2 hybrid ceramic sealed cartridge bearing sets manufactured by Enduro. Once switched within the wheelset, both front and rear will be smoother rolling, lighter weight (saves 10 grams), and will see an increase in durability. This is afforded by higher grade seals, races, grease, and a more perfectly round ceramic ball. 57 grams per complete kit.817616022667
