Tannus Armour Tire Insert 26 x 4.0-4.8, Fat Tire Tube, No Flat Bike Tire Liner, Puncture Proof Tube Protector for E-Bikes and MTB

I wanted a few months to post this. Overall it’s been working out for me. I installed this on the rear of a 26x4 fat tire e-bike. I didn’t have to cut anything, I used a 26x3” tube. Also used just a light dusting of corn starch on the tube and liner to help it slide into place for installation. Just add enough air to the tube for it to barely take shape helps. Don’t try and install a tube that still completely laying flat out of the box I can see that being a hard installation. I got about 95% of the tube and liner put in by hand, barely had to use a pry on the tire bead at the end. Just take your time! I think a big issue and why people might complain about this product or flats on fat tires is that with a 26x4 you really need to be careful about tire pressure and how everything is aligned. It’s super easy to get a pinched tube on a fat tire e-bike. I mean if you only have 3 pounds of air in your back tire and you put any weight on the bike, you’re probably going to destroy that tube and it’s gonna blow. I don’t know how well this product will work in ways of, the tube from getting pinched on the rim but as far as things poking through and getting to the tube, it seems to help. Also I’d recommend running about 5 pounds lower air pressure than you normally would when using this product. Even better use this with some flat out or slime and you should be pretty good to go.

I was looking for security because I am a 60 year old disabled man and this bike is the only exercise I can do and if I get a flat, I can not walk and i have no one to save me. I would not be able to get home. I put this on and installation was easy and never had a flat after and was able to feel ok about going farther from home. This is what I needed and I was able to feel good about riding any where without worry of being stuck. You will not be sorry if you spend the little extra for this because it solves the problem that takes you here. Unfortunately for me, I was riding my bike and was struck by a tesla and I was in the street with my shoulder out of socket trying to get up because my knees were burning on the street,. I asked the driver to please help me my knees are burning and they sped off and left me. I never knew people could be like this to anyone. I had to lie on my side and roil myself over out of the street cuz it was a very busy main street and nobody even tried to help me They just waited for me to roil out of the way and someone got my bike and moved it and the wheel was all bent and now I am saving money for another bike because I cant walk and need exercise. I know I will put these inserts in my new bike when I can get one.

For £134 i expected to get x2 of the 26x4" armor, unfortunatly i was wrong and only 1 turned up, have spoken to tannus uk and the price for the 26" armor is £50 per item, trying to return the item isnt the best either, they require you to pay for return shipping which for the price is mad. avoid at all costs!!!!!!!!

For $155 I thought it was for 2, a set of liners. It's $155 for one piece of foam?! Insane...never would have ordered if I knew it was over $300 for 2 pool noodles.

Adds weight and maybe unbalances the tire. Exceeding 15mph you will notice a slight bounce. A little unbalance is well worth the trade off to never have to fix a punctured tube. I ran these on a 26x4.0” tires.