Rear wheel center fits 28″ & 32″ 6 loop rims. Fits 8 bolt hubs with 6″ bolt circle, 4-1/4″ pilot hole. Disc measures: 25-1/2″ across. Center to center of 6 loop bolt circle: 24-1/4″
Uses (6) 5/8″ X 2-7/8″ bolts: 828217M1 (sold separately).