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Compatible with- Shimano 12-speed Di2 wireless derailleurs: XTR
If your Rotor was bought separately from the frame
check that your crank spindle is long enough for the wider BB shell
The Kolossos ST features an 18-tooth lower pulley (up from stock 16T) and maintains the 14-tooth upper pulley for optimized shifting accuracy and chain retention—essential for XC
External T47-e24 for Rotor 24mm Cranksets red Compatible with- Shimano 12-speed Di2This bottom bracket will fit any Rotor crankset with 24mm spindle on a T47 frame with 68mm wide bottom bracket shell. Kogel T47 e24 and T47 eGXP bottom brackets can be installed with any 16 notch, 44mm diameter tool, like Park Tool BBT 9 or similar. This is the most common tool for older Shimano bottom brackets, as well as Campagnolo UT and Sram GXP. Choose road bearings for road bikes, cross bearings for mountain bike, gravel and cyclocross or if you
