








🛡️ Ride Bold, Ride Protected – Never Let Flats Slow You Down!
Tannus Armour Tire Insert is a revolutionary puncture-proof liner made from patented Aither 1.1 polymer foam, providing 15mm of top and 2mm sidewall protection. Designed for mountain, gravel, fat, and e-bikes, it installs tool-free between tire and tube, enhancing grip, shock absorption, and ride comfort while preventing flats from thorns and sharp debris. Lightweight, reusable, and recyclable, it adapts to tire pressure to maintain optimal tire shape and performance.









| Bike type | Mountain Bike |
| Color | Black |
| Size | 20" x 4.0-4.8" |
| Material type | Foam,Polymer |
| Batteries included? | No |
| Brand | Tannus |
| Department | Unisex |
| Manufacturer | Tannus |
| Item model number | 20 x 4.0-4.8 |
| Product Dimensions | 50.8 x 12.29 x 50.8 cm; 499 g |
| ASIN | B09454ZZ39 |
D**.
Make sure it fits right
I used a smaller tube fit good rides super smooth and half the pressure
S**E
E bike Squishy tire LESS MILES/less flats vs. Firm air filled tire with 30% MORE MILES/ more flats/
I do Food delivery and would normally get 35miles per charge on my e bike. But now has been reduced to 25 miles per charge. You will get a squishy tire in comparison to a firm aired filled tire. So there is a trade off. Less mileage equals less Deliveries but less flat tires. On other hand you got a firm filled tire with 30% more miles but more constant flats. Still don't have a warranty opinion yet. Now if I get a flat with low mileage then I will change the rating from 3 stars down to 1 star.
C**P
Foam never held up after a month.
I saw these amazing Tanus Armor inserts on youtube and thought it would prevent flats on my ebike but after a month I got a flat from a machine screw and of course, There was no stopping a 1 5/8" machine screw from puncturing the tube but what the problem is with the inserts is that when I opened up the tire to swap the tube, the inserts were completely FLAT instead of thick foamy bottom like when first installed. I used to recommended PSI to be 10 PSI less than original. I super disappointed in the product because of the high cost. I could have got the other tire liner for fraction of the cost. Of course this all happens the day after 30 return window has expired. With so many positive reviews I expected more than thin foam or I could have used a pool noodle to do the same thing. BTW the run flat claim is BS. There was no way you could ride on a flat.
T**A
Wow expensive BUT WORTH IT
The paper thin tires that they put on eBikes aren't worth a damn in sticker country...putting these outrageously expensive liners inside these paper tires is brilliant... phenomenally better than cursing continually at flat tires!
R**B
Good quality for the price.
Good quality for the price.
Trustpilot
3 days ago
1 month ago