The K&N RK-3942 High-Flow Air Intake System increases engine intake airflow and delivers more horsepower & torque to your Harley-Davidson motorcycle. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The sturdy, custom aluminium backing plate mounts directly to the throttle body via an aluminium integrated, internal-run breather system. The intake system comes with a K&N Air Filter for high airflow and long service intervals. The K&N High-Flow Air Filter is washable, reusable, pre-oiled and ready for installation.

Features:

• Designed for Harley-Davidson motorcycles.
• Increase horsepower and torque.
• Easy to install.
• Made in the USA.

Specifications:

• Estima ted Horsepower Gain: 9.32 HP @ 4803 RPM
• Replacement Filter: E-3980
• Air Filter Material: Cotton Gauze
• Air Filter Height: 56mm
• Inlet Diameter: 33mm
• Overall Height: 56mm