All GRAY wheels come standard with valve extenders, but if you need more, here you go.
This extension adds 40mm to the valve stems. Unlike a normal extension that slides over the valve, these extensions are placed between the valve stem and the valve core. Simply take the valve core out of the valve stem, thread the extension into it, and then thread the valve core into the extension. There is even a rubber seal on the extension so no air can leak. Packaged individually. Available in anodized red with an etched GRAY Logo.
Aero and Deep Dish Aero rims require that you use a longer stem Removable Presta valve.