Michelin AirComp Inner Tube

While you can use it, this tube is specifically built for downhill and aggressive gravity riding. It uses a heavier, thicker butyl construction that adds significant weight, so it is likely overkill for lighter trail riding where efficiency is a priority.

Yes, this tube is designed for 26-inch wheels with an ISO diameter of 559. As long as your tire size matches this diameter, it will fit your rim.

The AirComp uses a much thicker, heavy-duty butyl rubber compound compared to standard tubes. This extra material is specifically engineered to resist pinch flats and punctures caused by sharp rocks and high-impact landings common in downhill riding.

A 40mm valve is a standard length that works well with most traditional mountain bike rims. If you are running deep-section carbon rims or specific aero setups, you may need a longer valve or an extender, but for the vast majority of 26-inch downhill rims, this length is perfect.

Yes, you can use this tube with tubeless-ready tires. It is a great option if you prefer the reliability of a tube but want the puncture resistance of a heavy-duty casing, or if you are having trouble getting a tubeless setup to seat properly.