Stan's No Tubes Tubeless Valve Stems

These stems are designed to fit most standard tubeless-ready rims. However, because rim profiles vary, ensure your rim bed is compatible with a standard Presta valve hole before installation.

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

Medium length stems are the standard choice for most mountain and gravel bike rims. If you are running deep-section aero rims, you may need a longer valve extender, but for standard trail or road wheels, these will provide the perfect amount of clearance for your pump head.

Yes. Brass is significantly more durable and resistant to the stress of tightening and loosening the valve nut. It is less prone to stripping or bending, ensuring a reliable, airtight seal for the long haul.

The pack includes the valve stems themselves, which feature a threaded base and a rubber grommet for a secure seal. You will need a standard valve core tool to remove the core, which is typically sold separately or included with many sealant kits.