This bottom bracket is for you if you have a threaded MTB shell (68mm or 73mm) and wish to use a 30 mm crank spindle. Please make sure that the crank spindle you have is long enough to work with your frame and this BB combo. Cranks well known to work include the Rotor 3D+ and 3DF cranks. The tool needed for installation is included here. Please select the bearings for you with diligence.

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