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

Looks great. Works great.

Definitely a nice touch to your wheel. It comes with several different adapters for the inner rim and a stem remover. It served its purpose so I can’t complain.

Other than the cool green color there’s nothing special about these tubeless valves and they’re way overpriced. The metal is a cheap alloy and part of the thread on one of them sheared off. Also a rubber o-ring and a rubber stopper tore. Yes it comes with a cap that doubles as a core removal tool but so do lots of other competing valves. You can do way better in a tubeless valve for half the price.

Have used many tubeless valve stems from different manufacturers, so far these are hands down the best . There are two types of inner rubber mounts that make installation a breeze with any rim . Using these for a downhill application, and will definitely use these again

Im a man wholl gladly pay a premium for a product, as long as it solves my problem. My problem in this case was my very first successful tubeless tire installation. The wheels on my new Specialized Roubaix came tubeless ready and with valves that of course didnt work. They just wouldnt hold air around the seal. So I stumbled upon these, and since I would have them in my hands inside of 3 days, I bought them, despite how pricey they are. Now, once you see the package, you notice that these valves come with the tool for removing the valve core, which is a plus for me because I love new tools. They also came with 3 different types of valve seals for the hole where the valve pokes out of. All you have to do to swap them is remove the one that came installed from the factory by first removing the cap, lock ring, and the o-ring, which frees up the seal to be removed. Since my DT Swiss wheels wouldnt work with a cone shaped seal, I used the one thatll resemble Thors hammer when installed. You push that through the hole, make a good tight seal, and despite recommendations to the contrary in a video I watched, place the rubber o-ring over the valve, followed by the lock ring, which has room for the o-ring to make a nice tight seal. Finger tight only! Now, just complete the tubeless tire mounting as one would, seat the beads of the tires, and then add your sealant through the valve. I was expecting to have to do this whole process again, but lo and behold, the tires have held their seal. This is what I call PROBLEM SOLVED! No more leaks through the valves and I managed to actually seat the tires with just a floor pump. Ill update if I get any leaks or anything goes wrong, but I dont imagine anything going wrong. Expensive, YES, but totally worth it to let me get out there on my new tubeless tires!

I really like these things. The stem cap with the core removal hole in it is a brilliant touch. Unneeded, but I still love it lol

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

Edited: well, this is slightly embarrassing. Originally reviewed these negatively because one valve wouldnt hold air even after reseating the valve/replacing the tape. I went back and looked at the tape again and realized there was some kind of defect in the entire roll and there was a faint score more that was leaking air into the spokes on one side. Replaced the tape with a fresh roll and the second valve worked perfectly. TL:DR theyre a little pricey but they fit snug and the colors are nice. Lean into your vanity and just get them, theyre only like $10 more than Stans.

Hands down, the worst bicycle related purchase Ive ever wasted money on. These valves are garbage! They clog if you look at them sideway and are completely overpriced. Spend half the money on Stans, WTB or some other reputable manufacturer on a better quality set of valves and ride with confidence that they wont leave you stuck on the side of the road trying to clear a clog so you can pump up your tire.

My ENVE rims were continually losing air no matter how well I tried to seal the valves. These stems and grommets are the perfect shape and durometer to make a positive seal. They even came with rim stickers and a core tool. They are worth the money.