BWSHLF Tubeless Presta Valve Stem 40/44/55/60/65/80/100 mm, Super Light Alloy Presta Valve Stem Kit with Valve Core Remover Tool and Valve Stem Caps - Multiple Color and Size Options(Pair)

I love these. The attention to detail is amazing.First, the quality is good all around. The threads are precise and smooth. The grommet and O-ring are good quality with no abnormalities that affect usage. Top cap machining is excellent.While the basics of presta valve stems are the same and fit a standard, there are ways to stand out from the typical presta valve.1) The O-ring is fully captured by the tightening nut. No matter how much you tighten, the 0ring will not push out or deform thanks to the deep capture channel of the nut. The last 4 photos illustrate how well the O-ring is captured.2) The interior base is keyed for an allen wrench so you can hold the valve stem in place and torque your tightening screw down easily. See photo.3) The interior grommet is flanked by a large base. Even if you torque the tightening screw down further than you should, it is hard for the gasket to go past the base. It is almost fool proof, although I still wouldn't torque this down to the maximum. You just want to remove any play in the stem when tightening.4 )Both top caps serve as core removal tools. They fit well and make easy work of even the tightest cores. See cap photos.5) The look is amazing. I use Bontrager tires & wheels so the B logo fits perfectly.These are great valve stems. The amazing grommet and O-ring design makes these a cut above the typical stems you see. Not too mention the top caps. While they still suffer from thin and weak shafts due to the presta standard, they are the same durable as any other valves regarding the shaft. Also, these valve stems will not fix a bad tape job. They may help gloss over a mediocre tape job at the valve hole, but a bad tape job will always leak. I 10 years of daily riding, I have tried it all, and these are my favorites thus far. Prestas are not perfect, but these help elevate the platform a bit.

This is a really solid product, but no weight penalty. The raised air vent into the tire, prevents blockage by the sealant. The large and solid tightening screw on the valve, permits you to close the opening for the valve tightly and to reopen it easily; furthermore the sealant is kept away from the valve and it is nice and tidy. It all works much better than the original system that came with my expensive wheels.

These are good quality and the threads go all the way down to the rubber sealing gasket. This makes them perfect for single walled carbon rims. Another brand I bought didn't have threads down to the gasket so they wouldn't tighten all the way down. The purple on these is very eye catching.

Nice looking and work well.My only complaint is the height of the base makes it difficult to use for road tubeless tires which are notoriously difficult to put on the rim. Probably not an issue for wider gravel/MTB tires.

They get the job done and I like the color variety. Great price.

Not much to say about this. It came in a nice metal box with spare caps. Install is very easy and they dont leak. I like that these are offered in various colors and lengths. They seem to be more substantial then Stans that I used to buy.. Perhaps for weight weenies it may not be the best option.

These are solid tubeless stems. Have them to 1 year now and no problemsPros: Nice colorsEasy to installGood PriceEach stem comes with removal capsCons: None

Had these stems on my mountain bike for a while now, and never had any problems. No leaks, no clogged cores, no problems at all. The cutouts in the caps work great for removing the valve core too.

Válvulas fáciles de instalar, muy buena calidad

Compre estas válvulas por que en una rodada se "capó". Esats válvulas funcionaron de manera muy eficiente. Sellan bien y estan muy boniras, el color metálico luce mucho. Dependiendo de los colores de tu bicicleta, estas valvulas pueden ayudar a que luscan mejor.Los dos tipos de tapones que traen son muy practicos para proteger el alma y para removerla.Los recomiendo bastante!

Son muy buenas vienen con un cambio extra de tapón. Además de ser baratas se siente de una calidad muuy buena !

Fin de buen material y te incluyen tapas de repuesto

Están muy bonitas y sellan bien. Pero se tapan con el mismo sellador de las llantas y luego no se pueden inflar. Se tiene que desarmar el alma para destaparla