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THINVIK NEW TUBELESS PRESTA VALVE STEM
Aver
Reviewed in the United States on March 6, 2025
This looks like a very great tubeless bike kit install the caps look great. It looks fun. The red stands out a lot. I was not actually able to install these onto my rims as I have to leave on a trip and I did not have time to install the tubular system on the bike, but after reviewing the actual stems and components to it, I saw that it has everything you need for a good stem install on your tubeless bike at after this I would get a nice rim tape to secure the bike and then some good bike glue in the tubes to prevent it from leaking and seeping air out other than that fantastic
John Mundy
Reviewed in the United States on February 2, 2025
Good quality and they worked great.
Amanda
Reviewed in the United States on January 4, 2025
Replacing the standard tube stem as it was chewed up and required pliers to open and close. This one looks great the shape is perfect along with the height it should serve me very well. The quality was better then expected all in all I really like it.
Mike W.
Reviewed in the United States on January 26, 2025
These valve stems are well-made and come with thoughtful extras like spare seals and a core removal tool, all packaged in a handy aluminum box. They were easy to install on my tubeless tires and provided a secure, airtight seal. The included caps with the built-in core remover are a nice touch for quick adjustments. While the materials seem durable, the absence of wrench flats on the tightening nut makes installation slightly less convenient compared to other brands. Overall, this kit offers great value and functionality, with a sleek design that enhances the bike's look.
mamahope
Reviewed in the United States on January 14, 2025
First off these look so much better than the valves my bike came with. These add an air of professionalism to my mountain bike which I love. They were easy to install and worked perfectly with my tubeless tires.
TC
Reviewed in the United States on December 4, 2024
So, I gotta admit that I've seen these valve stems on Amazon for a while but was hesitant to buy them because I'd never heard of the Thinvik company and the name just doesn't scream "quality bike parts." But I got these as an Amazon Vine promotion, and, as someone who sets up all of my own tubeless wheels, I gotta say they're pretty high quality. Everything is well machined and well built. Each pair of valve stems comes with 2 extra o rings, 2 extra silicone seals (the part that seals the stem to the inside of the rim, which for me always wears out first on other valve stems I've had), 2 spacers, 2 blinged out caps (mine are a cool silver color), and an extra cap that has a built-in core remover. AND...all of this comes neatly packaged in a cool aluminum box that looks a bit like an Altoids box. If you get the silver, the "Thinvik" logo is impossible to read, which I think is a plus. I think these are fairly priced at $12.99, and I would get them again.
jdub19
Reviewed in the United States on December 21, 2024
Very well made valve stems with removable core.These are EXCELLENT valve stems.The machining is perfect.There are 2 sets of rubber sealing cones included.The valve core removal tool doubles as a cap. Overall these are essentially perfect.5 starsI 100pct recommend purchasing these valve stems.
Rev_Pizzaguy
Reviewed in the United States on December 16, 2024
I needed to replace my rim tape on my WTB ST i30 rims, so I thought I'd give these valve stems a try. Previously, I had the VeloTubes FR11D 40mm stems installed, so I took a few comparison photos with these from Thinvik.Compared to the VeloTubes, the tightening nut on these do not have wrench flats, only a knurled texture, so that isn't quite as nice. The branding on the threading is a little annoying as well, but if they work, I can deal with it. The aluminum seems a little less heavy duty as well, so we'll see how they hold up. The Thinvik set also included a core removal tool that can also serve as a cap, so that was nice.I was able to install them no problem and so far they seem to be holding air. This set from Thinvik came with some extra rubber seals if you need to replace in the future, but from my opinion, I would have preferred a couple extra presta valve cores rather than extra internal seals.I have some downhill rides coming up this weekend, so we'll see how they hold up and if there are any issues, I'll update the review!
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