CeramicSpeed Bontrager Aeolus Coated Hub Kit

Refresh your Bontrager wheels.<br /> - Premium ceramic replacement bearings for Bontrager Aeolus XXX and Aeolus D3 wheels<br /> - Only compatible with Bontrager rim-brake wheels with DT-Swiss internals<br /> - CeramicSpeed bearings reduce friction and improve performance and durability<br /> - 400% smoother, 128% harder and 58% lighter than a standard steel bearing<br /> - Made from Grade 3 Silicon Nitrate - the highest possible grade<br /> - 75% harder bearing race, further reducing friction and wear