Schwinn Homegrown Model Identifier › Forums › Building a 98 Full Suspension from scratch › UN-72 XT level November 11, 2010 at 12:37 am #2960 bikericMember The BB is a UN-72 73mmX113mm. It is used, but still spins smoothly in the hand. The threaded cups are alloy not plastic, so I would prefer to just ship the whole thing instead of one end. $10 through PayPal gets it to your door.
