The Michelin Ultra Heavy Duty Off-Road Tubes are a high quality product which is able to offer excellent resistance to punctures / damage, reducing the likelihood of pinch flats.These Inner Tubes are available in a wide variety of sizes.4mm thickness with straight Valve fitmentExcellent resistance to punctures / damageOverlapping splice - stronger than a butt spliceSplice placed on opposite side to Valve for balanceThe Michelin Ultra Heavy Duty Off-Road Tubes feature an extra thick 4.00mm thickness, which provides greater resistance to punctures and other damage whilst out riding.The construction of the tube has an overlapping splice that is much stronger than a butt splice - often used on other inner tubes. The Splice is also placed on the opposite side the valve to create a more balanced inner tube.Please Note - 8.3mm diameter tyre valves are suitable for European and older motorcycles while the 11.3mm diameter tyre valves are suitable for all later Japanese motorcycles.Please note -