Active filters
High-flow air cleaner kit that increases horsepower, torque and fuel efficiency. Includes a pre-oiled cotton filter and precision-machined components.
Polycarbonate view window; high-performance pre-oiled washable filter; hidden breather backing plate; reduced intake height for improved leg clearance.
Next-generation backing plate and one-piece top filter improve airflow to increase horsepower and torque. Washable, reusable filter for easy maintenance.
High-performance Stage 1 air cleaner kit with a one-piece top plate and washable pre-oiled cotton filter for improved horsepower and torque.
Race‑inspired air cleaner kit with ultra‑light composite shell, reverse‑style filter element, dark outer ring, and precision base hardware.
Racing-inspired C4 Series air cleaner with an ultra-light carbon shell, forward-facing reverse cone filter element, and a Black Ops™ outer ring.
Hex-head breather bolts with plated finish; fits most supports and breather brackets.
- Vents breathers to atmosphere to reduce oil mist in the intake
- Converts internal breathing to external breathing for cleaner intake
- Made in the USA
Direct replacement vented dipstick that reduces blowby pressure and improves rev response and MPG. Two venting options and two oil-level reading methods (FHS/FHU). Made in the USA. Use a glove — dipstick gets hot.
Replacement outer cover for Big Sucker Stage 1. Compatible with Ness Billet Sucker and Big Sucker air filter kits.
Sleek replacement cover for compatible stealth-style air cleaner kits; easy to install and made in the USA.