Description
The K&N Filters FIPK Performance Air Intake Kit for Harley-Davidson Softail/Dyna F/I (KNN57-1125) is designed to increase horsepower and torque by significantly improving airflow to the engine. This performance intake system replaces the factory air cleaner with a high-flow K&N air filter and a custom aluminum backing plate for optimal engine breathing. Ideal for fuel-injected Harley-Davidson Softail and Dyna models, this intake kit helps enhance throttle response and acceleration while maintaining filtration efficiency. K&N’s trusted engineering provides reliable performance and long service life.
K&N Filters FIPK Performance Air Intake Kit for Harley-Davidson Softail/Dyna F/I (KNN57-1125) is a direct bolt-on upgrade that requires no ECU tuning or modifications, making it a convenient way to add performance to your ride. The black powder-coated finish adds a sleek look while resisting corrosion, making it both functional and stylish for Harley enthusiasts.
Features and Specifications:
- Vehicle Fitment: Harley-Davidson Softail & Dyna (Fuel-Injected Models).
- Air Filter Color: Red
- Air Filter Material: Cotton Gauze
- Air Filter Outlet Shape: Round
- Included: Mounting Hardware, 2 Clamps
- Clamp Material: Stainless Steel
- Clamp Style: Worm Gear
- Intake Pipe Color / Finish: Black
- Intake Pipe Material: Aluminum
- CARB EO Number: D-269-55
- Estimated Horsepower Gain: 7.78 HP @ 4953 RPM
- Horsepower Boost: Increases engine performance for improved acceleration.
- Throttle Response: Enhances engine sound and responsiveness.
- Aluminum Tubing: High-quality black finish.
- Quick Installation: Typically installs in 90 minutes or less.
- Long-Lasting Filter: Up to 100,000 miles before servicing is needed.
- Reusable Filter: Washable, designed for lifetime use.
- Warranty Coverage: Backed by K&N’s Million Mile Limited Warranty.
- Emissions Legal: 50-state legal for street use.





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