Features a billet aluminum backing plate with hidden integrated breather system and a plexiglass outer coverSnap-in velocity stack for improved airflowHigh-flow air filter is reusable just clean and re-oilDyno-developed and testedDelivers an impressive ~8HP power boost over stockIncludes mounting hardware and 1 rain sockMade in the USARecirculates head pressure back into the throttle body, aligning with the stock Harley-Davidson air cleaner setup. For those seeking to vent the head pressure externally, our external breather kit is also available for purchase.