Lightened Aluminum Racing Wheel Hub Set (Front and 1" Rear), 5/16" Bolts;

This complete lightened racing hub set comes with front (2) and rear (2) hubs, perfect for go-kart racing. Front Specs: Lightened racing front wheel hub. Dual American bolt pattern for both 1/4" & 5/16" bolts. Billet aluminum construction. 5/8" High speed wheel bearings pressed-in. 2-1/2" Bolt Circle. Rear Hub Specs: 1" Bore with 1/4" Keyway. Dual American bolt pattern for both 1/4" & 5/16" bolts. Billet aluminum construction. 2-1/2" Bolt Circle.