Stans NoTubes Valve Stems - 44mm

The required length depends on your rim depth. For rims up to 30mm deep, 35mm is usually sufficient. For rims 30-40mm deep, 44mm is recommended. For rims deeper than 40mm, consider 55mm or longer.

While the valves themselves are generally compatible with CO2, frequent use of CO2 can degrade some sealants and potentially damage rubber components over time. It's recommended to use regular air when possible.

These valve stems are designed specifically for tubeless setups. They can be used with tubes, but it is not their intended purpose and may not seal correctly.

The weights vary by length: 35mm models weigh approximately 8g, 44mm models weigh around 9g, and 55mm models weigh about 10g per valve.

Use a valve core tool or a small pair of pliers to unscrew the valve core counter-clockwise from the top of the valve stem.

These alloy valve stems are available in black, red, blue, green, and orange.

Yes, the Stans NoTubes Alloy Valve Stems are sold as a pair.

Ensure the valve stem is seated correctly in the rim hole. Tighten the lockring firmly by hand (do not overtighten). Check if the rim tape is properly applied and in good condition.

Confirm the rim valve hole size is compatible (up to 8mm). If the hole is tight, a small amount of soapy water might aid insertion.

Ensure the valve core is completely removed. Check if the core or stem opening is clogged with dried sealant; clean with a small pick or needle.

If the stem was bent during installation, carefully attempt to straighten it. If significantly damaged, replace the valve stem.