Tubeless valves and parts designed after years of experience with ideal and less than ideal rim and tire combinations
Tubeless valves provide an airtight seal on most Presta valve rims
Removable valve core for sealant installation
It all started in 2001, when a rider named Stan Koziatek had an idea. Frustrated with punctured inner tubes and believing mountain bike tires could perform better without them, Stan developed a way to replace inner tubes with a liquid sealant. Stan’s system created a tire that sealed itself almost instantly when punctured, but that was only the beginning. With no inner tube, tires treated with Stan’s sealant offered more traction, more control, and more comfort. They also rolled faster. The performance advantages were tremendous, and soon racers at the highest levels of the sport were asking Stan to help them go tubeless.