VeloTubes Mountain Bike Inner Tubes - 4 Pack-Select Your Size (26", 27.5", 29"), Presta Valve, Mountain Bicycle Tubes

Replaced a torn inner tube in my son’s mountain bike. Bought as a set for a great price. Can’t beat that. We now have extras to take along the trail. Hopefully we won’t need it but it’s good to have.

I am revising my rating to upward to a 5, from 3. Other than my initial review, I did not reach out to the seller, VeloTubes. Eric of VeloTubes reached out to me in such a genuine way, extraordinary really. He sent a handwritten letter with replacement tubes. I've been mountain biking for years, commuting to the office on bike at several days a week for the past few. Bad streaks happen with flats/tubes. I had two flats without leaving my garage. And as Eric asked in his letter "Maybe a pinch flat?" Yes, possible user error on my part. Although I was aware of that issue, keenly so on second tube as described below, I could have made install mistakes.Bottom line they way VeloTubes stood behind their product, I am very satisfied.------They seem a bit fragile. I changed my tire with a lightly used one of these tubes and when I re-inflated, immediate flat, rim side tiny split. I put in a brand new tube form my 4-pack, same thing, different spot. Third tube worked well, got through a nearly 4-hour mountain bike on that.

I ordered these after reading the variety of negative review. How hard can it be to make innertubes? Presta valve tubes for MTBs can get very expensive, very quickly, yet most of us don't really use the bikes the way they're designed to be used: offroad, high-impact, serious dirt.Let's be clear, I'm not a bike expert. Yes, these days I'm a bit more educated, since I've been rehabbing Craigslist mountain bikes for my kids instead of buying new bikes. But I'm not a bike mechanic (as so many reviewers claim) and I certainly don't know innertube details.But I picked up a pair of better quality wheels for my Trek 8500, and they require presta valves. So, now I need at least 2, but preferably 3 innertubes. So this looked like a great deal! $5 / tube is what Walmart charges for basic Bell 26x1.95 Schroeder valve tubes, but they don't carry presta valves... So, I decided to take a chance.I did NOT inflate the tubes outside the tires like the one reviewer did. Who does that, anyway? Who cares whether they have minor imperfections-- the tire holds the damn thing in place anyway?I simply put the tubes in the tires, installed the tires on the rims, and inflated them. And, lo and behold, both are holding air. So, 2/2 so far!I haven't taken the bike out for a hard ride yet. Once I've done that, I'll edit my post if a tube blows.But, honestly... my feeling was that if 3 of the tubes worked, I was getting my money's worth.Yes, when I took them out of the box (well-packaged, by the way), they felt a bit heavier than the Bell tubes from Walmart. But maybe they will be more durable? Who knows? Hard to say why a tube fails. And it isn't as if I'm trying to save 10gms per wheel...Anyway. Bottom line, at the moment the tubes are functioning as described, and I haven't seen any of the flaws identified by the other reviewers. $20 for 4 presta valve tubes! Dude!

Other brands split at the seams (like Slime), so far so good with these.

I am retired from owning a bike shop and do a little charity repair work on bikes. I have installed thousands of bike tubes over 50 years and these tubes seem to be of very good quality. Presta valves are designed so that they can be removed if you want to install a sealant. Shape of tube was uniform when I inflated out of the box. As with any tube you have to be careful when installing, as I have had many customers over the years complain that a tube was defective when it was clearly a problem with the install process. The first of these tubes I installed on a bike that had a extremely tight tire fit and I thought that I might damage the tube during the install, but it held up using care on my part. I expect to order this product again.

I ordered a set of these tubes and they arrived. Hooray! 5 months later, I find out that two of the four of them had a factory defect. Normally, this is where I would leave a bad review. However, I reached out to the seller and the nicest guy (Eric) got back to me within a couple hours. He was very surprised to hear about the issue, and he corrected it immediately despite the fact that the order was so old. He was consistently very quick in his responses, and he was beyond helpful and friendly.I doubt if the defect my tubes had is a common one because I've gone through a lot of bike tubes in my life and I've never seen it before. If you order these tubes and happen to get a defect like I did, don't waste your time dealing with Amazon customer service. Go straight to the seller and you'll have an incredibly easy time. All in all, an unlucky defect was immediately turned into a very pleasant experience. I will absolutely be ordering from these guys again.

I ordered a set of four 29" inner tubes with presta valves. They came nicely packaged.These seem like good durable inner tubes. They are made of thick rubber that seems like it will hold up well over time. The presta valves also appear durable, with reinforcement where the base of the valve joins the main inner tubes. If they don't hold up, I'll update my review.

Bought these to keep in my backpack in case of a flat while MTBing. Unfortunately, they are HEAVY! Not so great to carry around all the time. The rubber is thick and the tube is strong, no qualms with quality here. Just not a great spare tube for a cyclist doing a lot of miles.

Already installed one as I pinched the original while installing a new tire.Be warned that the valve is quite long so check the size you need before ordering.It makes no difference in performance but if you're OCD definitely check what you want first.Comes with washer, nut and cap.Recommended.