40mm Threaded Valve Extenders, Stans Notubes Tubeless Products, Valve Stems | Cycletech

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A pair of 40mm effective length threaded valve extensions for use with removable valve core presta valves. Allows deep section rims to be converted to tubeless use by way of external threads for securing the presta nut. The only externally threaded valve extenders on the market.

• CNC machined aluminum valve extension, 2 grams each
• Rubber o-ring seals inside the valve to eliminate leaks
• Adds 40mm of length to any removable core presta valve
• Can be used with our Road Tubeless Valve
• Can be used with any removable core presta tube
• Sold as a pair
• Removable valve cores not included