E*thirteen Tubeless Valve

The valve stem features an oversized internal diameter that allows you to inject sealant directly through the valve without removing the tire bead. You simply remove the valve core, inject your sealant, and replace the core to get back on the trail.

The design is specifically engineered to resist sealant buildup and congealing. While no valve is completely immune to heavy latex buildup over time, the two-piece construction makes it significantly easier to clean out any residue compared to standard valves.

These valves have a stem length of 24 mm. They are best suited for standard mountain bike rims; if you have deep-section carbon rims, you will likely need a longer valve stem to ensure the pump head can attach securely.

You will need a standard valve core tool to remove the core for sealant injection or cleaning. Beyond that, the two-piece body is designed to be tightened and serviced by hand, so no proprietary or complex tools are required.

While they are Presta valves and technically compatible, the 24 mm length is quite short and intended for mountain bike rims. They likely won't be long enough to clear the rim bed on most road or gravel wheelsets.