The MotoSport.com Shinko 421 Scooter Tire Combo includes ONE Front and ONE Rear Shinko 421 Scooter tire with the following features: A tough nylon carcass with dimpled knobs provides traction in a variety of terrains. Ideal for mini bikes. Tough nylon carcass. Open tread pattern cleans out well in muddy conditions. DOT approved. Note: NOT intended for extended highway use.