Kenda 700x23-25c Bicycle Inner Tubes - 48mm Smooth Presta Valve - 4 Pack

Great tubes! Take note, they have a smooth (not threaded) valve stem, though the end is threaded for a cap or inflator. They also do NOT have a removable valve core, which is good for me because my thread-on inflator was freezing to the cores of other tubes and unscrewing them, letting all the air out.

Love them

I would have preferred threaded values but this is a very nice tube and way, way, way better than the cheap ones you can find on Amazon. I tried a few different cheap tubes and they always get flats right away and so far with these I've not had a problem.

The Presta valves are cheap and the posts bend so easily while attaching the pump that they become unreliable. I have to remove the valve, let out all the air, fiddle with it until it moves smoothly and then put it back. I also bought a 4-pack and had 3 flats in 5 rides. I'm down to the last one, expecting only one good ride out of it and then I'm buying a different brand. Sorry, Kenda, I like your tires but not your tubes.

Favorite inner tube, and I say this as a long time serious rider for over 30 years now.No longer easy to find this tube, as a smooth stem, so happy to find it ONLY on Amazon.Why Kenda apparently no longer makes this tube is beyond me....I buy a smooth stem for several reasons, but mostly for the idea of inflating without wearing out my floor pump, and easy to slip on and off. The tube hold air pressure quite well.Have found the Kenda valves to be better than most. Try them !

I previously bought a generic product recommended by Amazon (?) and it was terrible in quality. Tube could not even hold round shape when I put little air in it before installation. Product was not exactly cheap. And it had a leak very first day I rode my bike.

Smooth stem doesn’t fasten to pump easily, several attempts required to pump tire. Miss locking nut for stem to add stability when pumping tire.

I bought the 4-pack, this is my second set. The most recent set seems to be of lower quality, but they are cheap, right? You have to be careful when handling these. Don't over tighten the lock nut that go over the stem, it'll cause it to leak from the tube itself. Also be careful when threading and unthreading the fill valve. They are pretty flimsy, but fine as long as you don't crank them too much. Pros: long valve stem makes it easy to fill. The price is right. Lastly, I wouldn't pump past 80 psi. I did and one began to leak at the valve stem. I'll try for 90 next week, but they're fine for now.