The aFe Aries AE1 performance air filter represents the next generation of performance filtration. No more use of weak foam with sticky grease. The Aries AE1 is constructed of pliable urethane with a bump seal for a leak free seal. The filter media is constructed of 4-layers of synthetic material that requires no sticky grease or oils and cleans with soap and water. Even in the field the Aries AE1 air filter can be vacuumed out or shaken clean to get you back out on your ride. Less Cleaning…More Riding!