Slow leaks at the valve hole rank among the most frustrating tubeless problems—air seeping out overnight despite fresh sealant and intact tape. The issue usually traces back to a poor grommet-to-rim-bed fit. Orange Seal's Versa Tubeless Valve Stem Kit addresses this with a modular grommet system: each kit includes two different rubber grommet shapes (conical and square-profile) that match different rim bed geometries. The large alloy base plate creates solid contact with the rim bed while the interchangeable grommets adapt to concave, flat, or angled internal profiles found across mountain, road, and cyclocross wheels.

The valve stems themselves use a larger internal diameter than most tubeless valves, which improves airflow during inflation and reduces the likelihood of sealant clogs at the valve core. Removable cores make sealant injection straightforward—pull the core, attach your injector, and add sealant without breaking the bead. The kit includes spare valve cores and a removal tool, so you're covered when dried sealant eventually gums up the originals.

Four stem lengths (32mm, 48mm, 60mm, and 80mm) cover everything from shallow aluminum mountain rims to deep-section carbon road wheels without requiring valve extenders. The threaded lockrings feature machined flats that accept a 9mm wrench, allowing proper torque without the pliers-and-scratches approach that small knurled rings often require. Each kit ships with colored stem nuts in six shades, which serves the practical purpose of identifying front versus rear wheels at a glance—or just matching your build aesthetic.... Read More