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

Multiple seal options and very easy to tighten to rim. You can use your hand and a 4mm Allen key to get it as tight as desired. Would buy again and WAY better than Stan’s

Easy install, nice having options for the seal to make the best fit. I have a couple hard rides with new tires and these stems. Both working great and no leaks!

Muc off makes a great tubeless presta valve Pros Pack of two valves with replacement seals Comes with cap that can take off valve to fill your tire without taking the tire off Colors look great, easy to see the valve on your tire Tight seal, well constructed Cons: Price is slightly higher than most tubeless volves

Advertised as 6061 machined aluminum, but looks and feels like plastic. Did Muc-Off change something or have I receive a counterfeit?

Love these and the kit with all the different profiles of rubber seals for inside the rim. I myself am have the best luck overall with the ticker long cone shaped one . Seems to seal on any profile rim. It’s more about sealing up a hole and it’s shape vs the shape of the rim . The stems are phenomenal and the big rubber O ring in seal for the top cap are great for most rim profiles.

I dont know if the quality has gone down on these or what. I bought this based on all the reviews. 2% with 1 star in 3K+ reviews. I bought the first set and it failed me the first time. Thankfully, I was pumping it dry and didnt waste any sealant. I wasted hours though trying to get my tires to seat and it turns out the valve core was not letting any air in. So, I got a replacement from Amazon thinking it was a rare occurrence. The second time around, both my tires are set. Sealant in and tubeless tires are a go. I thought that was that. ONLY for both valves to leak air out. Tried to pump air back and the valve core is just broken and we cant inflate the tires with the valve core in place. At this point, Im just going to try to replace the valve core rather than remove everything to return it. Im hoping it works, otherwise, i might just have to spend more money to have a bike shop fix it.

I have to admit these were a little pricier than I would have liked to have paid (not to mention that the valve core broke off inside the valve when I first aired it up... but it is possible that I was a little too forceful with the air chuck) but they add just the right amount of bling to my bike. Once I added sealant to my new Wheels with these valves there were no problems. They look great! They do exactly what they are supposed to do.

Excelente

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!

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.