VeloTubes Tubeless Schrader Valve Stems - Pair of 40mm or 46mm Alloy Valve Stems

Works how it should and looks good on bike. The rotors are titanium nitride coated and blend well with the color. Seals nicely and the backing is thick for good rigidity to rim. Would be nice to get in a few more colors 😀. Very happy with purchase. A++

I converted to tubeless using the stock rims that came with my Specialized Myka, with tubeless ready continental tires. Used Gorilla tape, these valve stem, and Stan's sealant. They all worked fine. I could not use my regular bike pump to seat the tires though, but luckily I have a compressor and it worked fine to seat the tires even without the sealant. After dry inflating the tires with the compressor, I filled with fluid and inflate to max pressure (51PSI for my tires) and kept it there for a few minutes, rotating and flipping the tires every few seconds or so. Then I let some air out to 40PSI and let the tires sit on the sides over a box to keep them level, flipping every few minutes and rotating them. Then left overnight, and in the morning flipped them again and let sit for a few hours. I mounted the tires in the afternoon, and let out air until my riding pressure, and took them for a test ride. No leaks and the tires held pressure overnight.Highly recommend these valve stems, and I bought a second set of them for a second bike tubeless conversion.

These work well but require electrical / pipe thread tape around the valve stem to tapered rubber gasket interface. Easy fix. They will leak by without it. Better built than the competition. Like the metal flange that presses the gasket into place. Have these in two sets of carbon rims. Like the larger finger nut with o ring too.

A Presta tubeless valve stem was to small in diameter to seal in my bike wheel that came with Schrader valve inner tubes.

I didn't have any luck with them they seem to be somewhat okay but the rubber they come with to seal the rim is less-than-ideal you may be able to get around it or just better yet look for something better

PrestaShop valves work great for skinny tire road bikes, but not wide rim mountain bikes. Schrader is so much easier.

I’ve always leaned towards Presta valves but this tubeless setup changes everything. I love this product. Schrader valves have so many advantages over presta; increased airflow, universal air components (pump heads, valves, etc.), and ease of use (easier to clean airway). Unless you are running 100psi tire pressures (road bikes) you don’t really benefit from presta valves. This product puts the quality of presta with the usability of schrader

Installed with very little effort, and the rubber O-ring on the outer side below the nut seems to really help maintain an airtight seal. I converted standard MTB wheels to tubeless in a short amount of time using this valve and Stan's No Tubes sealant. So far, 3 weeks and several hard bumpy canyon rides later, the set up is holding air almost as well as tubed tires (maybe losing 1-2 PSI per week, but I always check tire inflation before each ride anyway, and don't mind adding a bit of air -- it's a fair trade-off to eliminate ride-wrecking pinch flats).