Simply put, an EP Radiator Guard protects the Triumph Speed Triple RS radiator from damage caused by road debris (stones, mud, dropped waste etc), while at the same time allowing cool air to pass through. The radiator's thin, soft aluminium cooling fins easily bend, and misaligned fins can restrict cooling air, which can lead to overheating. The radiator's internal core is also susceptible to being holed by stones that can be picked up by the front tyre or other traffic and flung directly into the radiator. Leaking coolant will make the Triumph Speed Triple RS overheat, which, in turn, can lead to engine damage.