The BA air cleaner kit lengthens intake runners to increase air velocity and adds volume for a balanced, dynamic flow. Designed on the flow bench, dyno tested and track proven. 🔧
- One-piece design creates a clean look and simplifies installation compared with multi-stack construction.
- High-flow billet aluminum velocity stack with optimized opening diameter, outer lip and internal taper.
- High-flow washable/reusable 2.5" wide air filter with a one-piece billet cage.
- The backing plate is engraved with MADE IN USA and FEULING logos.
- Impressive horsepower and torque gains, especially on engines with modified or ported cylinder heads, larger intakes, or bigger throttle bodies.
- Out of the box the air cleaner is set up for OEM-style cylinder head breathing with optimized vent hole locations to meet emissions standards.
- Fits '93-'99 Evo Big Twin models (head breather, 1/2-13 breather bolts). Will also fit '84-'92 Evo models (case breathers, 5/16-18 bolts) with purchase of Feuling hardware kit #5100.