evoBike Tube Bundle 700x23-25" 60mm Presta RVC - 4 Pack

Great price! I needed several ones to have as a backup for my first Ironman race. Luckily I didn’t need to change a tire, the tubes look like great quality.

They are what they say they are. Holding up fine.

The 2 i have on my tires now have been great. No leaks, ridden on them for the past few months, no issues. 1/4 tubes came to me with a pin sized hole. Probably easy to patch it with a patch kit, but its annoying that I have to do that with a new product. Luck of the draw with what you get.

These seem good. Seems like every tube on Amazon has some bad reviews. I can only imagine that there are some lemons out there, and probably a lot of people who don't know how to install tubes correctly (and that maintaining high pressure in road bike tires actually makes them last longer). These tubes were compliant and had a lot of springiness to them, so they're probably pretty fresh.I can say that I've changed out bike tubes myself ever since I started biking seriously, which was about 17 years ago. I can do it without suffering pinch flats or other common errors (installing a tube without baby powder is a rookie mistake). I've ridden about 50 miles on these tubes so far, and maintaining 110-115psi of pressure has resulted in no issues. Bike tubes are kind of like that though- if they don't blow right away, they're probably good. If they do, there's a good chance it's either a defect in the tube, or something is wrong with the tire or the installation.

Cores are removable

I installed them on my bike with a set a brand new Vittora Rubino Pro tires and went for a ride on paved road. 12 miles in when the few bumps started, I had my first flat on the front wheel. Changed it with and carried on. At mile 16 or so, it was time for my Rear tire to go flat, changed the tube again (my last spare) and carried on. 2 miles later the rear went flat again. Finally had to call my friend to rescue me and give a ride home.I was riding on a very popular well maintained bicycle trails which are travelled by hundereds of riders everyday. The road condition is really good and no major potholes or anything. At each flat I did NOT bump into any pothole or anything. The tube was not pinched and also it was fully inflated as per the spec of tire.Riding for years and this was first time ever having multiple flats. I used to buy my tire tubes from Performance bika and since its clousre had tried this brand for the first time.

Good qualityRemovable stems are important to add sealant

I don’t find any easy to install, but they are as advertised and a good value