Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single

Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus
Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single Tannus

Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single

Tannus Armour Tire Insert - 20 x 3.0-4.0 | Single

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What Makes the Tannus Armour the Best Fat Bike Insert?

The Tannus Armour Tire Insert sits between your tire and inner tube to deliver serious protection without sacrificing ride quality. With 15mm of top puncture protection and 2mm of sidewall shielding, it guards against flats from sharp rocks, debris, and rough terrain while dampening vibration for a smoother, more controlled feel. Designed for the 20 x 3.0-4.0 tire size, it fits fat bike, cargo bike, and large-wheeled e-bike setups that demand both durability and comfort on every ride.

Beyond flat prevention, the Tannus Armour delivers rim impact absorption on hard hits that would otherwise cause pinch flats or wheel damage. Its tube-type installation means no sealant or tubeless conversion needed, just slip it in alongside your existing inner tube and ride. Sized for 20 x 3.0-4.0 tires, it is built for fat bikes, cargo bikes, and oversized e-bikes where reliability on rough or loaded terrain is non-negotiable.

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$75.90
$75.90
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Out of Stock

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  • Estimated delivery: Sep 13 - Sep 17

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Specifications

  • Size: 20 x 3.0-4.0
  • Top Protection: 15mm
  • Sidewall Protection: 2mm
  • Compatibility: Tube-type (with inner tube)
  • Sold As: Single insert

FAQ

Do I need to go tubeless to use the Tannus Armour Insert?

No. The Tannus Armour is designed for tube-type setups. Simply install it between your tire and inner tube. No sealant or tubeless conversion is required.

Will the Tannus Armour add significant weight to my wheel?

The insert adds some weight, but it is minimal relative to the protection it provides. Most riders find the tradeoff well worth it for the flat protection and vibration dampening on loaded or rough rides.

Can I use the Tannus Armour with any 20 x 3.0-4.0 tire?

Yes, the insert is compatible with any standard 20 x 3.0-4.0 tire on a matching rim. It works across fat bike, cargo bike, and large e-bike applications without modification.

Best For

Cargo bike commuters, fat bike riders, and e-bike users running 20 x 3.0-4.0 tires who need reliable puncture protection on loaded rides or rough urban terrain without switching to a tubeless setup.

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