This is a pair of American bottom bracket cups. These cups allow you to use a Mid size sealed bearing bottom bracket in an American size frame. They are made out of anodized 6061-T6 Aluminum. These are made to fit 50.8mm frames and 41.2mm OD bearings.
BMXGuru.com / C&W Cycle
702 North St.
Morenci, MI 49256
Sign up to get the latest on sales, new releases and more…