50 mm carbon rims with 60 mm Presta Conti Tube Race - YouTube
BORG black alloy tubeless valves x2 40mm, 50mm, 60mm, 70mm or 80mm lon | The Cycle Clinic
Valve length for 40mm rims - Bike Forums
Schwalbe SV Tubeless Valves | Velonova ®
Amazon.com : MBP Alloy Tubeless 50mm Bicycle Pro Design Presta Valve Stems Fits Most Rims with 2 Types of Grommets Included for Each stem. Alloy Cap has Built in Valve core Remover