DIRT BIKE

Part Description: "Real butyl tubes" made from 100% butyl polymer, unlike other "butyl" tubes, which are blended butyl polymer and natural rubber. Each tube is individually boxed with a full range of sizes and valve stem types clearly marked on each box end. 100% butyl tubes minimize natural air leakage and maintains air pressure for longer period of time. All stems are TR-4 type for valve stem.

Part Description: TUBE 21MD VALVE TR-4 STREET 2.50-21 / 2.75-21 / 3.00-21 / MH90-21 / 80/90-21 / 90/90-21 80/100-21 / 90/100-21, MICHELIN Splice is always placed opposite the valve, which helps to provide a more balanced tube Features an overlap splice which is stronger than the butt splice used in most others Michelin Airstop tubes are used by those who want the very best

Part Description: TUBE 275/300-21 100/80-21 90/90-21 TR4 IRC Highest-quality motorcycle tubes meet or exceed OEM quality and performance Butyl construction