CeramicSpeed T47 Bottom Bracket Description: T47 is a standard created by custom frame builders. It's threaded, has an inner diameter of 47mm, and is 86mm wide. It has the design benefits of being oversized and wide, but also the practical benefits of threads. Features: Save watts and ride faster with guaranteed lowest friction, optimized power transfer, and longest product lifetime T47 bottom brackets utilize the oversized interface of PF30 and EVO386, but with the added benefit of a threaded interface Super round CeramicSpeed balls and hardened-steel races Specifications: Frame Interface: T47 Spindle Interface: 30mm Spindle Bottom Bracket Shell ID: 47 Shell Width: 86mm Color: Black Weight: -