UPGR8 U8701-3909 HD PRO OEM Replacement High Performance Dry Drop-in Panel Air Filter (Red) UPGR8 air filter is designed to fit perfectly in your stock air box Made of high density acrylic fiber, black rubber and double black reinforced stainless steel mesh It is engineered to maximize air flow performance Allows more air to flow easily to the engine and it will increase more horsepower and torque This panel air filter is long life type filter and it is reusable