A flat tire 5 miles into the backcountry means a long, heavy walk out. Tannus Armour inserts sit between the tire and tube to absorb the thorns, rocks, and punctures that cause flats — so you ride out instead of walk out.

Key Features
- 15mm of puncture protection on top + 2mm sidewall protection
- Patented Aither multi-cell foam compound technology
- Available in 4 sizes: 20x3-4, 24x4, 26x3, and 26x4-4.8 — select your size at checkout
- Sold individually with tube and Schrader valve (purchase two for a set)
Specifications
| Weight | 2.0 lbs per insert |
|---|---|
| Tire Size | 20"-26", 3.0"-4.8" fat tires |
| Kit Includes | Tannus Armour inserts + matching tubes |
| Weight | 2.0 lbs per insert |
| Protection | Up to 95% puncture prevention |
| Run-Flat | Yes (ride home at reduced speed) |
Frequently Asked Questions
Which fat tire bikes do these inserts fit?
These 26" x 4.0" Tannus Armour inserts fit all Rambo fat tire bikes including the Dominator HD, Megatron 4.0, Hellcat AWD, Krusader 3.0, Rebel 2.0, and Savage 2.0.
Will these inserts fit other fat tire e-bikes like Bakcou, Cyrusher, or Velowave?
Yes — if your e-bike uses 26" x 4.0" tires, these inserts will fit. Many Bakcou, Cyrusher, and Velowave fat tire models use this size. Check your tire sidewall to confirm before ordering.
Do Tannus Armour inserts add weight?
Yes, each insert adds some weight, but the trade-off is virtually eliminating flats on the trail. Most hunters and off-road riders find the peace of mind well worth the minor weight increase.
What's In The Box
- 1x Tannus Armour tire insert
- 1x Inner tube with Schrader valve