SILCA 44mm Tubeless Valve kit w/Speed Shield

Let's face it, the reason most of are looking for new tubeless stems is because the old ones leak. The Silcas have a different shape of the rubber on the bottom. They seal up easy, although I don't have a lot of time on them, no leaks. The black color is nice and look great on my new carbon wheels. The little areo thing is weird, I can't imagine there is much areo drag on a stem.

Great product, very happy with the valves and they look great on carbon envy wheels!

Works perfectly well. The shape of the seal is good and effective, and I like the black.