To be used exclusively with Bontrager Tubeless Ready (TLR) wheels. Required for Bontrager's Tubeless Ready (TLR) system set-up. A removable valve core for easy sealant filling. Silver MTB valve is compatible with all Bontrager Mountain wheels except: Line XXX, Kovee XXX and Line Pro 40. Black MTB 50 mm valve is compatible with all Bontrager Mountain wheels. Alloy Road Tubeless Rim Valve is compatible with all Bontrager alloy TLR road wheels. Sold as singles.