K&N Filters Intake System for Harley Davidson – Black-Top – Red Filter (KNNRK-3950)

The K&N Filters Intake System for Harley Davidson – Black-Top – Red Filter (KNNRK-3950) delivers enhanced engine airflow and performance for select Harley Davidson motorcycles. Featuring a bold red reusable filter and a durable black aluminum top, this system is designed to improve throttle response, increase horsepower, and maintain long-term engine protection. Whether commuting or cruising, this intake system offers an easy upgrade to keep your ride performing at its best.

Features and Specifications:

• Vehicle Fitment: Selected Harley-Davidson motorcycles
• Top Material: Black Powder Coated
• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Estimated Horsepower Gain: 4.85 HP @ 4851 RPM
• Replacement Filter: E-3987
• CARB EO Number: D-269-59
• Air Filter Height: 2.469 in (63 mm)
• Horsepower Boost: Increases engine horsepower for improved performance.
• Throttle Response: Enhances throttle sensitivity and engine sound.
• Durable Housing: Cast aluminum, high-volume intake in sleek black finish.
• High-Flow Filter: Washable and reusable K&N cotton air filter for superior airflow and protection.
• Velocity Stack: Integrated internal design for optimized air intake.
• Built-In Breathers: Replaces external OE breathers with an internal system.
• Quick Installation: Installs easily in 90 minutes or less.
• Street Legal In All US States: Not legal for sale or use in California on any pollution-controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status of your vehicle in the application listings.