Screamin' Eagle Heavy Breather Extreme Air CleanerDesigned for maximum performance, this race inspired Screamin' Eagle Heavy Breather Extreme Air Cleaner flows 20% more air than the Original Equipment air box. Chrome finish At speeds over 60 mph, the air cleaner experiences a ram air effect. All new filter design captures air from Extreme face, on front of air cleaner. Air then travels through the race inspired elbow followed by a straight shot into throttle body Designed to feed a large displacement