Active filters
Built-in stinger cone reduces turbulence and increases airflow. Kit includes backing plate, filter and hardware. Made in the USA.
High-flow, reusable cotton-gauze filter with snap-in velocity stack and billet aluminum backing plate with hidden breather. Dyno tested and made in the USA.
Assault Charge High-Flow Air Cleaner — reusable high-flow filter, snap-in velocity stack, plexiglass cover, made in USA.
High-flow, reusable air cleaner with snap-in velocity stack and integrated breather system; dyno tested and made in the USA.
- Increased filter area with radiused inlet and stinger cone for improved airflow.
- Includes back plate, filter element, top cover, hardware, and instructions.
- Cover sold separately; can be run without a cover or paired with an OEM-type 1999‑later Big Twin cover.
- EU-approved for legal use where applicable.
- Increased filter area for improved airflow
- Includes back plate, filter element, top cover, hardware, and instructions
- Cover sold separately; can be used without cover or with OEM-type 99-later Big Twin cover
High-flow Big Sucker™ air filter kit with pre-oiled, washable red filters, hidden breather technology, and all hardware included.
High-flow Monster Sucker® air cleaner with hidden breather technology and a reusable, water-resistant synthetic filter.
Big Sucker hidden-breather air cleaner with increased filter area, water-resistant synthetic filter, reusable—rinse and re-use.
Big Sucker hidden breather design for efficient engine breathing.
Expanded filter surface area for increased airflow and performance.
Water-resistant, oil-free filter — rinse and reuse.
Big Sucker hidden-breather design with increased filter surface area, water-resistant synthetic media, reusable—no oil required.