Features:??What you Get??: 2* Wheels (with tire, rim, tube), 2* Pillow Block, 1* Axle Assembly, 1* T8F Chain, 1* Sprocket, 1* Brake Disc, 1* Brake Master Cylinder Caliper Assembly.Enough for your need.??High class and Durable??: These have almost all the rear-end parts necessary needed, Suitable for DIY rebuild drift bikes, go kart quad, or trikes.??Shaft Size??: The Shaft overall length: 740 mm (29.13 inch), Spline to Spline: 452 mm (17.79 inch), the thickest part of the shaft is 22 mm(0.86 inch), Bearing Position: 20 mm(0.78 inch).??Wheel Size??:Diameter-13.0 inch , Width- 3.93 inch , come with 4.1-6 tire, 6″ rim, and inner tube.??Suitable??: fits 6 inch wheels (rim) with 3 bolt pattern and 3 inch bolt to bolt space.SPECIFICATION:Chain and Sprocket: T8Ffits 6 inch wheels (rim) with 3 bolt pattern and 3 inch bolt to bolt space.