Ultraverse 20x4.0, 26x4.0, 20x3.0, 26x3.0 Inner Tube Set with Schrader Valve-Ideal for Mountain Bikes & E-Bikes with 20/26-Inch Fat Tires-Durable & Reliable Performance 2 Pack with Tire Levers

With the original tires and tubes that come with these E bikes they’re very soft the side walls you can grab with your hand and push in and we almost every time wreck when we put our brakes and try and make a turn, and we already gotten three flats with these original back tires colors a lot of thorns over here in New Mexico, But with your tires and tubes are stiffer stronger Love the way they ride un stop return you feel safe, and when we ride over thorn over here ino problems with flats. I’m fixing to order two more tubes and tires for my other E bike.

Great quality... I received an email from Ultraverse, saying "Now that your product is delivered ...." 10 hours before it was delivered... I wrote back and said it hasn't been delivered and wrote Amazon saying it hadn't been delivered... I don't know why they sent that email so early.... But anyway... This is the second time I've bought them and they are good.... But since I thought they weren't coming today because of the email, I bought a set from two different companies to be delivered tomorrow and Saturday... One good thing now I can compare the 3 and see which ones I like the best... And I'll now have 5 spares...

I love these tires. I replaced set of original Lectric 20x3 tires on my XP3 with these. Swapping them out was a breeze. These tires are very smooth while riding and it seems to me there is less noise. the tread is quite a bit different than the stock Lectric tires, more for street riding. I do a lot of street riding with a small amount of gravel. The tread on these tires can handle both easily. I now have about 25 or so miles on these and am very pleased. My only gripe (and it is a small one) is that the nice yellow lettering is not on both sides of the tire. I think it really makes it pop. Shame it's not on both sides.

It's kinda difficult to write a review for inner tubes because there inside of a tire, right? All I have to say, and I do believe what I say should speak for itself. What I have to say is that I haven't gotten a flat tire, so the product is working at 100 percent efficiency. Also, it came with the right tools for the job and a chance to impose yourself with the company in the future. Also, the inner tube was substantially thicker than the original I had received, which means it's components are effectively better. I will turn to this company for any other needs I have.

Both valve stems leak from the top (where you fill) . Cores are snug. If they held air I would be able to give a better rating. Update 06/10/25 seller issued credit and sent replacements. Above and beyond customer service. I changed from 1 to 4 stars.

Originally I purchased Ultraverse 20x4.0, Inner Tube Set and was blown away on how affordable they are with such high quality! Next I tried out there ANTI-PUNCTER FAT BIKE tire liners and was blown away again on how smooth the ride is with no tire balance issues at all! Ultraverse is definitely my new go to for my bike needs!!!

Over the past few months I’ve ordered from different brands and this is by far the best quality for the price. There’s a lot of thorns nails and glass usually where I live and I go through inner tubes like crazy. I’ve gotten so many over the past few months and might I just say these are the strongest and longest lasting inner tubes I’ve ever bought

I bought these for a replacement tubes for my E bike based on their reviews. I thought they would be a good thing to have on my bike in case I blew a tire now I feel like I’m protected.