K&N Filters FIPK Air Intake for Harley Softail/Dyna FI (KNN57-1137)
Upgrade your Harley-Davidson’s intake system with the K&N Filters FIPK Air Intake for Harley Softail/Dyna FI (KNN57-1137). This high-performance air intake is engineered to increase airflow, resulting in improved horsepower and throttle response. The system replaces the restrictive factory air filter and housing with a high-flow cotton gauze filter that is washable and reusable. Designed for durability, this intake system helps optimize engine efficiency while delivering a deep intake sound. With easy installation and all the necessary hardware, it’s a perfect upgrade for riders looking to maximize their bike’s performance.
Features and Specifications:
Material: High-flow cotton gauze filter improves engine performance.
Compatibility: Fits select Harley-Davidson Softail & Dyna models.
Increases Horsepower and Performance: Replaces the restrictive OE air cleaner with a K&N high-flow air filter and cast aluminum intake tube.
Enhanced Throttle Response and Sound: Improves airflow for a more responsive and powerful ride.
Durable Cast Aluminum Intake Tube: Engineered for high performance and longevity.
Washable and Reusable Air Filter: K&N High-Flow cotton filter provides superior protection and airflow.
Integrated Velocity Stack and Built-in Breathers: Eliminates external OE breathers for a cleaner setup.
Long-Lasting Efficiency: Lasts up to 100,000 miles before servicing is needed (varies by conditions).
Easy Installation: Installs in 90 minutes or less with included die-cast aluminum throttle-body mounting plate and hardware.
Product identification
- Brand: K&N Filters
- Model / MPN: KNN57-1137




