This bottom bracket shell is designed specifically for the 41 mm press-fit type bottom bracket. The outside diameter is 1-3/4" x 91 mm wide, providing 1.5 mm for facing after welding. The inside diameter is supplied .5 mm undersized to 40.5 mm (1.595"), and must be finished to size after fabrication by the frame builder. Machined from 3/2.5 titanium, it is relieved in the center for weight reduction to 42 mm (1.653").
Item sold individually.