CeramicSpeed T47/68 Bottom Bracket for Shimano Standard Bearing Brake Type_Rim This product is ideal for

This product is ideal for athletes

SPD-SL and SPD cleat compatible

Content: 61% Merino Wool

with dependable Tektro mechanical disc brakes offering reliable stopping power in all weather conditions

CeramicSpeed T47/68 Bottom Bracket for Shimano Standard Bearing Brake Type_Rim This product is ideal forT47 is a standard created by custom frame builders. Its threaded, has an inner diameter of 47mm, and is 68mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads. The cups have CeramicSpeed bearings pressed in. There are two bearing options. The Standard Bearing has CeramicSpeed Balls and hardened steel races. The Coated Bearing has the same balls running on a 3 micron thick coating placed on top of