For 91-20 XL w/ CV Carb/Delphi EFI. CLARION AIR CLEANER. Contrast Cut. CNC-machined from billet aluminum and polycarbonate. High volume and best in filtration. Allows for viewing of internal intake components. Revolutionary backing plate that promotes smooth airflow into the carb/throttle body. Hidden built-in crank case breathers. Includes mounting hardware, slotted breather bolts and oil tubes. K&N air filter included. CLARION AIR CLEANERS. CNC-machined from billet aluminum and polycarbonate. High volume and best in filtration. Allows for viewing of internal intake components. Revolutionary backing plate that promotes smooth airflow into the carb/throttle body. Hidden built-in crank case breathers. Includes mounting hardware, slotted breather bolts and oil tubes. K&N air filter included. - Part Number - 1010-2313