This bottom bracket shell is designed specifically for the 41 mm press-fit type bottom bracket. It has an outside diameter of 1-3/4" x 105.5 mm wide, providing 1 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.