Roland Sands Clarion Air Cleaner For Harley Sportster Why cover up what makes your Harley so great Watch the throttle body's butterfly valve open, sucking in heaps of air and fuel, making that big beast run. Clearly see the operations of your throttle through a polycarbonate window, surrounded by a finely CNC'ed billet aluminum body. Features: Allows for viewing of internal intake components CNC-machined from billet aluminum & polycarbonate High volume, best in filtration K&N air filter included Revolutionary backing plate that promotes smooth airflow into the throttle body Hidden, built-in crank case breathers Includes slotted breather bolts and oil tubes Includes mounting hardware Rain sock available (sold separately) Contrast Cut, Black Ops or Chrome finish Made in the USA