Performance & Use Case
The Rotor T47 Internal Bottom Bracket is built for T47 threaded framesets that house the bearings internally rather than on outboard cups. The internal layout protects the bearings from the elements and gives a clean, integrated look. For T47 frame owners running a 24mm Shimano or 28.99mm SRAM DUB crankset, it is the bottom bracket the frame was designed to accept.

Construction & Materials
The cups are 100% CNC machined from 7075 aluminium alloy - light, strong and dimensionally accurate. Steel cartridge bearings provide reliable, low-maintenance rotation across the bottom bracket's service life. The spacer kit included with the unit allows you to fine-tune the fit across the supported shell width range.

Compatibility
Fits T47 threaded framesets with shell widths between 85.5mm and 92mm. Two spindle-compatibility options cover Shimano Hollowtech II (24mm) and SRAM DUB (28.99mm) cranksets. Select the variant that matches your crankset. Spacer kit included (sizes vary by variant).