Wolf Tooth T47 External Bottom Bracket

This bottom bracket is designed specifically for frames with a T47 threaded shell, which has an internal diameter of 47mm. It is compatible with shell widths ranging from 68mm to 73mm, making it suitable for most road and mountain bike frames using the T47 standard.

Yes, this specific model is engineered for the SRAM DUB spindle interface. It ensures a precise fit and smooth rotation when paired with DUB-compatible cranksets.

You will need a bottom bracket tool with a 44mm, 16-notch spline interface. This is a common standard, so many standard external bottom bracket wrenches or sockets will work.

Wolf Tooth uses a specialized bushing interface that prevents direct metal-on-metal contact between the bottom bracket and the frame. This design effectively isolates the interface to eliminate the friction and movement that typically cause creaking.

It is built for durability in harsh environments. The unit features an advanced multi-stage sealing system, including labyrinth-style end caps and spindle o-rings, which are specifically designed to keep water and grit out of the bearings.

The bearings are high-quality AISI 52100 chrome steel and are well-protected by the multi-stage seals, but they are not designed to be user-serviceable. If they eventually wear out, the entire unit is typically replaced.