Bullet Proof Designs Radiator guards are tried and tested by some of the top riders in Enduros, Hare Scrambles and Desert Races all over the world. Our new lightweight design does not adversely affect cooling or restrict air flow. These guards mount to the frame providing top-tier frontal and side impact protection without interfering with fan kits. Our guards are compatible with fan kits and oversized fuel tanks up to 3.5 gallons