2-PCS 26" Self Sealing E-Bike Tubes 26 x 4.0 26x4.50 AV32mm Schrader Valve Super Automatic Repair, Self-Sealing, Puncture Resistant Compatible with 26x4.0/4.5 Fat Bike Bicycle Tire Tubes

I’ve put these heavy-duty self-sealing tubes on all three of my e-bikes, paired with puncture-resistant tires, and after 1600+ miles on all kinds of terrain—potholes, gravel, mud, trails, curbs—not a single flat. They’re way thicker and tougher than stock tubes. Found them on Amazon years ago and they’ve never let me down. Highly recommend!

Delivered on time. Product was as sold. No problems.

Haven't used yet, quality looks good

Riding my 26x4 fat tire ebike down hill (40 km/h) on a small street road, I noticed my speed cut by half as my rear tire began to wobble - A sheet metal screw had punctured it. I pulled it out expecting it to seal with gravity, yet the hole exit was too big and the tube lost all the fluid and squelched in the tire shell. A puncture proof liner/insert could have avoided a such a riveting hole, or at least make the screw tip the only concern.

I was sceptical about the automatic repair on this! I am pleasantly surprised! The state has decided for a small bit of time I shouldnt be driving or ridding a motorcycle, soo I bought a nice electric bike for the moment and ran into flat after flat with stock tires! I bought heavy duty tires and the bigest liners I could find, when it came to buying new intertubes since I was spending the money on everything might as well get theese too. I am very happy with the results of my new tires! A few days ago however I pulled a big sharp peice of what looked like couch framing nail outa the rear tire as it was flat (yet again). To be fair it would have given my FatBoy motorcycle a flat tire as well. I put air back in and it still leaked and I was talking smack about theese intertubes but I was wrong! it took some time but after filling the tire twice to get home it held. then i made sure to get it to full rated pressure and it held, a few days later it is still holding!! just needed a few hours to set and I am good! it was a big gash that hit perfectly into the weakest part of the tire I was sure it wouldn't work....... I was wrong

I bought two new. one came dirty and damaged I know it’s self sealing but honestly don’t think it would seal that brown spot. I payed for new ones and I feel like I got scammed don’t recommend Other one was perfect.

just as expected

They were easy to install and look as shown but I had one blow out the first day and have no idea why it did. I'm assuming it was defective. 1 is still rolling on my ebike after about 300 miles and I can't say it's a total waste since it's lasted this long.