ZOL Road Bicycle Bike Inner Tube 700 x 23/25C Long Presta Valve 80mm

I got these when I got new 50mm deep cross section carbon wheels. I had valve extenders on order to use with my stockpile of standard tubes with 48mm stems, but they were taking a long time to ship and friends warned me to stay away from valve extenders anyway. I was anxious to try out the new wheels, so I prime'd these tubes to use in the meantime. That was in June and several thousand miles ago and, at the risk of jinxing myself, have not had a flat or puncture since. I pump these up to 110psi (700x25's) about once a week and they are drop down to about 95psi by the end of the week. I occasionally let them drop down to 80 and haven't had any problems. My sample size is only 2 so far, but these have been flawless tubes. I'm not sure why others have had so many problems.

I bought these for deep dish rims. These tubes are faulty. I have gone through 17 of them, trading them out the night before and by morning there is a pinhole leak. I've tried them on various wheels, with new rim strips and brand new tires- still the same result; the only consistent factor are these tubes. Total waste of money.

save your money and buy quality brand. Bought two of these tubes to replace a front tube and both went flat on the first ride. Nothing unusual about the ride. Smooth, neighborhood blacktop. First time i thought it was a fluke...w/e one bad tube. replaced with the second and went flat after the ride. Maybe some of the other reviewers got lucky with a quality set. I, most certainly, did not.

I used to do Michelin tires but bought these because they were a bit cheaper. Unfortunately both popped within an hour of inflation - one when I was out riding, the other just sitting in my home.

Great product no problems. I put in about 5,000 miles a year on my road bike and replacement tubes are a must during the year or simply when you get a flat on the road. Since I have 50mm rims the extra long stem is a must to avoid having to use an extension.

I have a 6 mile daily commute, and my rim requieres a longer stem. I was looking for a tube with a long stem and this one did not disappoint. The tube has been working perfectly and I've had no issue with it. Great value for the price. I will be buying the tube again.

Only came with one tube not 2 as stated in product description. The 1 tube exploded at 15 psi before the tube was put in bike while sitting on the counter. Horribly disappointing as ordered this for my commuter bike so will have to wait on new ones on amazon but will probably buy locally to avoid waiting again. Will not use this brand again.

Made of poor quality rubber. Any tiny puncture gets extended and rips the tube apart. Impossible to patch with Park Tool Pre-glued super patches. Bought two units and had exactly the same problem with both over just a month of time. I rode better tubes with 4, sometimes even 6 patches, but punctures stayed in place. Your choice, but keep in mind... once you get a tiny puncture with this tube, you will need to throw it away.

Supposed to be a four pack but only one turned up???

He usado este producto desde que llegó, en general es bueno pero la válvula no es roscada así que no está sujeta y hace bastante ruido con el rin al rodar en superficies disparejas.

Muy buena, me gusta porque es gruesa por lo que es más resistente a esas pinchaduras causadas por pellizcos con el fin. En éste caso el peso no me importa.

En comparacion con otras marcas esta me gusto mucho se nota la calidad desde le momento que las vas a montar

very nice