Tyre Armor inserts provide an extra defensive layer against punctures for 20x4" fat bike tyres. Designed to fit snugly inside your tyre, these puncture-resistant inserts absorb impact and shield against sharp objects, reducing the risk of flats during off-road adventures. Ideal for riders tackling rough terrain, rocky trails, or challenging conditions where tyre damage is a concern. Easy to install and compatible with standard fat bike setups, Tyre Armor inserts let you ride with greater confidence and fewer interruptions.