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20 pieces high quality presta valve cores , enough for your bicycle, you can also share them with your family and friends, make your riding more secure.
A Large Quantity of 20 pcs of Professional Presta Valve Cores
Enhanced seal, triple-thread precision design outperforms industry leakage standards, our presta valve cores are engineered to provide exceptional air tightness, effectively preventing air leaks and maintaining optimal tire pressure.
20 pcs of Professional Presta Valve Cores
20 pieces presta valve cores you will get in the bag, enough for your bicycle, you can also share them with your family and friends, they are good bicycle necessities
bufulo
Reviewed in the United States on June 2, 2025
Lots of these to choose from these days. Most are so similar that it's hard to tell the difference. These are among the better quality cores. The top pin stops the nut securely with no exposed sharp edge and the top is flattened smoothly. Some have a lot of variance in this area and it can cause issues with some pumps. Both sets of threads are nicely cut on all the cores I received. Quality control for all the metal parts is exceptional.These also use the white plastic ring seal for the core versus black rubber. The white plastic holds up better in my experience. The plunger seal is black rubber and hopefully good quality. Lately I have had this seal go bad on some of these generic valve cores. The rubber swells, presumable from a reaction with some sealants, and then basically just falls off. I'll just have to wait and see how this seal holds up on these over time. This area is also where the sealant sticks the most and plugs the valve so it's an ideal opportunity for improvement using a better material.They come in a thin plastic case with snap lock lid that is just sturdy enough to be re-used.Overall, these seem to be good quality cores with good quality control for a very good price.
_Customer
Reviewed in the United States on June 2, 2025
I needed to replace a couple valve cores and got these. These work great with my my tubeless setup. So far, no leaks and these keep my tire pressure steady, and installation was super easy, but make sure you have a valve core wrench!These are solid and well-made valve cores available in a big 20 pack, because valve cores just don't last forever.
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Reviewed in the United States on May 29, 2025
Seal well, priced well, what more is there to say? Having 20 valve stems makes it an easy decision to replace one if it gets clogged and I can't clean the sealant off or if the valve stem gets bent. I don't think I'll need to order more for a very long time.
Notabot
Reviewed in the United States on May 27, 2025
I primarily run my bikes tubeless, and the valve stems frequently get gummed up with sealant, making them a pain to open. I've also bent the pin portion on more than a few when being careless with a pump. Now instead of messing with them to try and clean them up or straighten them, I just swap one of these in and call it a day. No issues with them so far. I just put one in a wheel and did a 30 mile ride on it today, no leaks.If you don't already have a valve stem tool, buy one. They are cheap and make the job trivial.
Morgan
Reviewed in the United States on May 27, 2025
These fit precisely and hold air. Valve cores are so easy to accidentally bend, so it is nice to have extras. I can keep some with each bike and in different toolkits as extra insurance. It’s a small part that can make a huge difference.
JimBobRob
Reviewed in the United States on May 26, 2025
Not a lot to say about something as basic as a sizeable set of bicycle presta valves. Anyone that works with these valves knows they are prone to getting bent during a tire airing, so having extras, with the appropriate removal/replace tool is important. I've only installed one so far, but it did what you'd expect, screwed right into the stem and held air as it should. Very good to have this inexpensive but useful supply on hand!
Brayan Espinoza
Reviewed in the United States on May 22, 2025
I used them to replace the ones on a tubeless tire that has definitely clogged up. They installed without any issues and are currently performing up to par. They are also easy to install and, most of all, very inexpensive. I would recommend.
SRSJLS
Reviewed in the United States on May 20, 2025
I live in Az and the dry air causes sealant to dry and gum up valves pretty quickly. Given that, I need to replace them frequently and these valves work great, and the price is amazing. I can't tell any difference to other valves that I have paid much more for from premium brands. Honestly, there are brands that sell 2 valves for more than this pack of 20. And they come in a nice plastic container, not a tiny bag, so they are always easy to find. Hands down, these are the way to go!
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