Bearing CeramicSpeed bontrager-3 aeolus disc brake

Bontrager-3 Road Bearing Kit for Aeolus disc brake Optimize overall wheel performance with the Ceramic Speed Bearing Kit. Ceramic Speed bearings last 3 to 5 times longer than standard bearings. The reduced friction of Ceramic Speed bearings plays a very important role in the overall performance. Box contents: 2 x 61902 bearings, 2 x 61802 bearings, 1 x 61803 bearings, 1 x 61903/18 bearings, grease CeramicSpeed, sticker pack