This bottom bracket shell is machined from 2" x .180" wall 3/2.5 titanium tubing. The width is 73 mm and the outside diameter is 1.875". Both dimensions are machine finished to size. The bearing bore is supplied undersized, 1.640"/1.643", and must be finished to size by the framebuilder after welding. Snap-ring grooves are finished to size. The inside diameter is relieved to 1.745"/1.755".
Use with heatsink FT5003 (see Related Products on this page).
Item sold individually.
Photo courtesy of Seven Cycles.