RR310 Radiator Guard – RD 917 – ht exhaust BLACK ( BLUE )RR310 Radiator Guard RD 917 ht exhaust BLACK ( BLUE ) This radiator guard serves a critical role in protecting the bike's radiator from debris, rocks, and other hazards that can potentially cause damage during your adventures on and off the road. It helps protect the oil cooler fins from day to day elements like pressure washing or flying debris during weekend trail hunts. All this without hindering the air flow which is critical to cool the engine.