Wheels Manufacturing 386EVO Threaded Bottom Bracket Thread It Together The bottom bracket keeps your crankset moving smoothly so you can pedal to the end of your ride. The Wheels Manufacturing 386EVO Threaded Bottom Bracket is designed for 386EVO frames and M30 28/30mm diameter spindle Praxis-compatible cranks. Machined aluminum cups thread together for stability, increased bearing life, and simple installation and maintenance. Features Bearings: Enduro ABEC-3Bottom bracket shell width: 86mm - 92mm Crank spindle diameter: 28/30mm | Wheels Manufacturing | 386Evo Abec-3 Bb - Praxis Praxis M30/28, Base