Investment-cast chromoly steel bung fits 1.5" OD backbone tubes on stock and custom motorcycle frames Includes self-lubricating bronze pivot bushings to reduce binding, ensure tighter tolerances and provide smoother operation when paired with a Biltwell seat hinge Raw finish welds easily and takes spray can paint like a champ Mates to any generation or style of Biltwell brand seat hinge. BUNG SEAT HINGE GEN-3
