7075 aluminum replaced 6061 in the V2 revision of Muc-Off's Tubeless Valve Kit, and that material swap accounts for both the weight savings and the durability increase over the original design. The aircraft-grade alloy handles the repeated torque cycles from lockring adjustments and the lateral stress that valve stems absorb when you're wrestling a pump head on and off mid-ride. Muc-Off machines the stems and caps from solid stock rather than casting, which means tighter tolerances and cleaner threads that won't cross or strip.

The V2 design adds a 6-slot channel machined into the base of each valve stem. Those slots solve two problems at once: they allow air to flow past the valve base during initial inflation, which helps seat stubborn tire beads, and they keep sealant and air moving freely if you're running foam tire inserts. Insert users know that standard valves can get blocked where the foam presses against the rim bed. The slotted base routes airflow around that obstruction, so you're not pumping against a partial seal.

Each kit includes 3 sets of rubber base gaskets shaped to match different rim profiles. Curved rim beds get the circular gasket, while squared-off internal rim shapes use the square version. A larger circular option handles oversized valve holes. This adaptability means you're not stuck buying rim-specific valves or shimming mismatched seals with tape. Installation uses a 4mm hex slot machined into the stem for controlled torque, and the spare alloy cap doubles as a valve core removal tool so you can add sealant without hunting for a separate tool.... Read More