Rear Axle Kit:Length: 740mm (29 1/8″)Disc: 160mm*4mmSprocket: T8F 58TBrake Disc Diameter: 160mm(6 1/4″)This is a complete rear axle kits for go kartFits (For the reference):Perfect for DIY gokart projects or rebuildsFit for quad ATV buggy go kartFit many 50cc 70cc 90cc atv quads, go karts such as atomik , motowork, DHZ , LEI etcPackage Includes:Rear Axle Kit (As picture) AC-YCZYQ-4266 815mm (32″)Product function description:NOTE:Installation Manual Is NOT Included Professional Installation Is Highly RecommendedRear Axle Kit:Axle Overall length (from end to end): 815mm (32″)The thickest part of the axle is 30mm (1.2″)Chain Sprocket: 428 41 TeethBrake Disc Diameter: 190mm(7.5″)Spline teeth: 24T and 28TFits (For the Reference):Perfect for DIY gokart projects or rebuildsFit for quad ATV buggy go kartFit many atv quads, go karts such as atomik , motowork, DHZ , LEI etcPackage Includes:Rear Axle Kit (As picture)