Made by Speed Evolution [ www.speed-evolution.com ]

Cool colors aside, We choose to sell the absolute Best valve stems on the market, And bring them to you at the best price. Made from lightweight aluminum alloy. They are super strong and function flawlessly. They have a large inner bore that is free of vulcanizing rubber to prevent clogging with sealant. With the valve core removed adding sealant is a breeze. The increased air flow of these valves make for quick and easy tire bead seating.