Choose Options Quick view Freewheel Sprocket & HD Axle Kit w/Brake $49.99 Make your own heavy-duty rear wheel for your motorized bike. Each kit includes a chain drive sprocket in your choice of 3 sizes, freewheel sprocket mounting hub, drum brake, and heavy duty axle that's ready for spokes and a rim. For use with any chain... Compare Choose Options Add to Wishlist