K&N Unique Air Filter (E-3986)

K&N Unique Air Filter (E-3986)The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley Davidson motorcycles. The air filter is covered by the famous K&N Million Mile Limited Warranty. Replacement air filter for specific RK Series

Protects your carburetor from dirt and debris

Less pressure drop at turbo inlets

Constructed with a blue colored synthetic media it can be cleaned and reused repeatedly

The filter base incorporates a 1/4 inch NPT threaded fitting to attach an optional vent adapter

Gain a guaranteed increase in horsepower and torque with a K&N cold air intake system

The K&N 57S-4900 Performance Airbox replaces the restrictive factory air filter and air box

The 69-4510TS air intake comes with a black rubber topped K&N high-flow air filter that installs into the previous air box space

This package contains 4 black clips that are 3/4 inches wide and 4

1/8 inch DP/CT

The 57-6001 air intake comes with a large

The K&N® Premium Disposable Cabin Air Filter is designed to provide consumers with cleaner

Light weight yet durable