Stan's No Tubes Tubeless Valve

The 44mm length is a standard size that works well with most mountain bike rims and many road rims. If you have deep-section aero rims, you may need a longer valve stem, but for the vast majority of standard setups, 44mm is the correct length.

A removable core allows you to inject tire sealant directly into the tire without breaking the bead seal. It also makes it much easier to clear out dried sealant that might clog the valve over time.

Yes, these are standard Presta valves designed to work with any tubeless-ready rim and tire system. As long as your rim is drilled for a Presta valve, these will provide a secure, airtight seal.

Brass is significantly more durable and resistant to bending or snapping than aluminum. While it is slightly heavier, the trade-off is a much more robust valve that can withstand the rigors of trail riding and repeated pump attachments.

You can install these by hand, though a small pair of pliers or a dedicated valve core tool is helpful for tightening the lock nut securely against the rim. Ensure the rubber base is seated firmly against the inside of the rim to prevent air leaks.