To Make More Power, you must have more airflow! Increasing airflow at the inlet is step one - even for a stock engine. Zipper's MaxFlow and HiFlow air cleaners include high quality 100-percent washable, pleated filter elements made from multiple layers of surgical-quality cotton gauze material that traps the smallest dirt particles while providing dramatic flow increases. USA-made cast backing plates incorporate internal breather passages and are available in three finishes to match your engine and budget (standard silver aluminum cast, texture black or chrome). All accept the standard TC "football" air cleaner cover (not included).

Two filter depths are offered, standard HiFlow and MaxFlow: HiFlow keeps the outer cover at the same location as stock. MaxFlow version moves the cover out approximately 3/4" wider due to the extra deep MaxFlow filter element.

HiFlow is recommended for stock engines; the MaxFlow filter should be used on modified engines with high flow exhaust systems for best results. All required mounting hardware and instructions included.