Classic made in USA Profile Racing American bottom bracket to fit the large old school bottom bracket fitment and for 19mm 3 piece cranks. 

• For use on bicycles with American BB shells with 19mm (3/4") sealed spindles. 

• Formerly known as the American Bottom Bracket with Hop Up Kit. 

• Gives your Profile crankset that "finished" look. Includes cups, sealed bearings, tube spacer, cone washers, and flat washers.

• Black, Polished, Red, Blue, Gold, Purple, or Green cups.