Tannus Armour Tire Insert 20 x 3.0-4.0
Tannus Armour is an insert that wraps around your tube inside of your bicycle tire and provides 15 mm of puncture protection on the top, as well as 2 mm of sidewall protection. Tannus Armour sizes are based on your tire size. Price is for a single insert.
You will need a smaller tube with Tannus Armour. Enter this handy Tannus Armour Tube Size Chart! The minimum inner rim width needed to install the inserts is 19 mm. Tannus Armour sometimes needs trimming if the tire size is on the small side of the scale.
How to install
Printable installation instructions
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