Tubeless Valve Stem - Super Light Alloy - Pair - Choose Color/Size

They look good and do not leak, but the stem is not fully threaded. If you plan to add sealant with Stans No Tubes 2-Ounce Sealant Injector it will not thread on to the stem, just hold it secure and hope it doesn't leak too much when injecting. These would work fine if you plan on pouring the sealant directly into the tire.

The effective length is much shorter than listed; the 55mm stems have a grip length of of about 40mm when you include the nut and the 5mm end that is not threaded. A note or drawing would have been helpful.

Looks pretty good so far, like any other valve with removable core. Will see how it holds over time.Note that it has a little o-ring under the lock ring, and theres a groove in the lock ring itself to protect/hold the oring in place.. kinda nice actually.Otherwise, they're your standard valves with removable presta cores

Now running tubeless on my custom 45 deep carbon rims. Sealed up just fine on the first try. Be aware that these stems are only threaded at the end, so I was not able to use a presta adaptor in order to blow them up using my air compressor. I just used CO2 cartridges to get the tires to seal the first time. They are nice looking and the red matches my red nipples and hubs.

These valves are not good for deep rims. May work on a flatter rim, but the small nut and tiny cheap rubber o-ring don't form a tight seal on my 35mm deep rims. The nut will squeeze the o-ring out, leaving a gaping hole. These valves do not magically "contour to the rim surface" per the product description. That's just wishful thinking. I replaced these with higher quality Serfas valves which come with bigger o-rings and larger nuts that cover more area around the valve hole.

So far so good. Long enough to work with my high profile carbon tubeless rims. I ride a lot and pretty hard and haven't had an issue. The rubber stop was nice. The color works with my INine hubs too. I originally thought maybe the screw threads were rough but haven't had any problem with the lock ring or getting the cores in and out. I will buy these again.

I bought a set of these in Red for my MTB and Black for my road bike and both sets work really well. The color is a nice accent for the bikes as well.

Just as described. Fit well into my carbon rims. Rubber that seats into rim is round making it a little hard to seal up a tubeless tire but after shaking the rim multiple times after installing sealant, all was good.