ceramicspeed-wheel-bearing-upgrade-kit-bontrager-aeolus-2013-race-x-lite-road
ceramicspeed-wheel-bearing-upgrade-kit-bontrager-aeolus-2013-race-x-lite-road, CeramicSpeed cartridge bearing kits for wheels is an upgrade option that provides extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.Grade 3 Silicon Nitride ballsHardened racesReinforced polyamide cage and non-contact sealsHand built in DenmarkHigh resistance to poor lubrication