Wolf Tooth Components T47 Bottom Bracket

This bottom bracket is designed specifically for frames with a T47 external shell standard, a 47mm shell ID, and a shell width of 68mm or 73mm. Please verify your frame's specifications before purchasing, as T47 is an external standard that is not compatible with press-fit or threaded BSA shells.

Yes, this bottom bracket is precision-engineered to accommodate 30mm spindle diameter cranksets. It uses specific spindle bushings to ensure a proper fit and prevent metal-on-metal contact.

The design utilizes spindle bushings that separate the bearing's inner race from the crank spindle. By eliminating direct metal-on-metal contact between these two parts, it effectively removes the primary source of creaking often found in bottom bracket interfaces.

It is built for durability in harsh environments. The unit features a multi-layered sealing system—combining o-rings, wiper seals, and labyrinth end caps—to keep contaminants out, alongside custom-hardened chrome bearings treated with a corrosion-resistant coating.

You will need a T47-compatible bottom bracket tool that matches the Wolf Tooth external bearing cup pattern. Because it is an external cup design, a standard external bottom bracket wrench or socket tool is typically required.