57-1125Guaranteed to increase horsepowerDesigned to improve throttle response and engine soundAluminum tube with high quality finishWashable and reusable lifetime air filterStreet legal in all 50 statesK&N FIPK air intakes for select Harley-Davidson Touring, Softail, Twin-Cam and Sportster motorcycle models increase power by eliminating the restrictive stock OE air cleaner and replacing it with a K&N high-flow air filter and mandrel bent aluminum intake tube. These intakes come with a billet aluminum throttle-body mounting plate and mounting hardware. K&N high-flow intake systems give your Harley an aggressive appearance while providing a significant increase in airflow resulting in more power. These K&N air intakes are street legal in all 50 states.