Stan's Alloy Tubeless Valve Stems

Specifications

• Material: Alloy aluminum
• Weight: Half the weight of standard brass valve stems
• Valve Core: Removable
• Base Design: Secure round base, compatible with most tubeless rims
• Rim Compatibility: All Stan's BST and BST-R rims
• Sizes: 35mm, 44mm, 100mm
• Sold: In pairs

FAQ

Are Stan's alloy valve stems compatible with non-Stan's rims?

Yes. The round base fits most tubeless-ready rims on the market, not just Stan's. Check your rim's valve hole diameter to confirm compatibility before purchasing.

Can I add sealant without removing the tire?

Yes. The removable valve core lets you inject sealant directly through the stem using a syringe, so you don't have to break the bead or pull the tire off the rim.

What length valve stem do I need for my wheels?

Match the stem length to your rim depth. The 35mm works for shallow rims, 44mm for mid-depth rims, and 100mm for deep-section aero wheels. A good rule of thumb: add 10-15mm to your rim depth to ensure enough stem protrudes for a pump head.

Best For

Riders building or upgrading a tubeless system who want to save weight without sacrificing reliability. The alloy construction is a natural step up from standard brass stems for road, gravel, and XC mountain bike setups where every gram counts.