Muc Off 1051 Black Tubeless Presta Valves, 44mm - Premium No Leak Bicycle Valves with Integrated Valve Core Removal Tool

Works great

The valve core is garbage. you cant inflate the tire cause the core doesnt allow air to pass through. Replaced core with old core and it works just fine.

A bit pricey for valve stems, but these are very high quality and look great.

Very well made stems. Metal valve caps are nice.

Good value here imo. Purple matches my wifes bike so shes happy. No issues, just as good as the stans brand.

Look no further, just buy it because you do need it and you’ve been putting it off and yes it’s worth the money!

They give you the adapters and settle in pretty quick. No issues for me.

These are a bit pricey, but I had a hard time finding something in blue that seemed reputable, so decided it was worth it in the end. I bought them to replace the ones that came with my bike because they did not seal well when using the pressure gauge (and I wanted blue instead of black). These ones dont have that problem.

I tried fitting up my 27.5 MTB wheels using Stand tape and valves since theyre kinda the OG of the tubeless market. I could not get the stupid things to seal at all! Either tire just leaked and leaked from the valve stem - I went through 2 packs and not a single one would seal even with sealant! It would seal after a bit, but the second I touched it to even just check my air pressure, it sprung a leak again. I was just about ready to just give up on tubeless, but I figured what the heck, Ill try stripping the wheel down and rebuilding it with Muc Off rim tape and seals and OH MY HECKING GOODNESS!!!! The rim tape was much better than stans as well, but these valves are head and shoulders above the Stans valves! How these are better than Stans: - With these valves, you get all aluminum construction including a color matching cap as well as a back plate of aluminum that goes behind the inner seal. This allows the clamping force of the nut to simply squish on the seal rather than trying to pull the valve out of the seal (glaring at you Stans). - Another things these have is 3 different seal shapes that you can chose from to match your specific rim shape (Stans only has a small round seal thats not interchangeable or replaceable). I went with the rectangle(ish) one for my MTB rim. - These valves also have a small O-ring that goes in between the nut and the rim, which provides yet another sealing surface. Stans did not have this and this is where I would ALWAYS get leaks with Stans. I mounted both of my tires up (front and rear) with Muc Off rim tape and these valves and tried to inflate them. On my front, I didnt even need my air bomb to seat the tire! I needed it on the rear (or probably could have gotten it with another layer of rim tape, but whatever - no biggie). To my surprise, once seated, BOTH wheels hold air for several minutes with no significant drop in tire pressure even without sealant! Obviously, there are some little pinholes in there that will be sealed up properly once I put in my sealant, but the Stans setup was a fight just to inflate enough to set the bead! Needless to say, Stans is junk in my experience/opinion and I will be sticking with Muc Off from now on!

Will never use any other valve stems. These are so worth the extra $. They install easy and seal first time, every time and you can use an allen key to tighten perfectly. Love the valve core removal tool built in to the cap. And love that they come with different shaped rubber seals so you can change them out depending on the shape of the inside rim.