evo.com | Stan's NoTubes Valves > Going tubeless has never been easier. With Stan's NoTubes Tubeless Valves and a shot glass' worth of sealant, you'll be able to run lower tire pressures, giving you the grip you've been searching for. With removable valve cores, you can re-up your sealant without messing with your tight seal, too! Durable Brass Construction Presta Valve Stems with Removable Cores Makes Adding Sealant Easy 35mm Shaft Length Fits Most Tubeless Rims | Stan's NoTubes 35mm Tubeless Valves 2025 - 35mm in Silver