K&N Round Air Filter (E-3978XD)

K&N Round Air Filter (E-3978XD)K&N XD air filters use a Deep Pile Design, Extra Fine Weave Grade Cotton and alternate geometries for added efficiency and capacity for off road conditions. This extra thick filtering medium provides the increased protection demanded by high dust conditions while continuing to provide the performance necessary to stay in the front of the pack. The XD Cotton medium was developed for the extreme conditions encountered by race teams in the Baja 1000.

Blocks up to 99

The oversized

The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100

K&N Custom Air Filters for Weber Carburetors - K&N Custom Air Filter kits are designed to boost performance from your carburetor while keeping the dirt on the outside where it belongs

colder air into the engine's throttle body for a guaranteed power gain

Inside the air box is a black rubber topped K&N high-flow air filter connecting to a mandrel-bent

This package contains 6 black clips that are 3/4 inches wide and 4

Decreases the restriction around the throttle bores

The 69-1010TP cold-air intake consists of a black rubber topped K&N high-flow air filter that mounts near the passenger side wheel well directing outside air through free-flowing aluminum tubing into a short ram induction tube that delivers high volumes of clean air into the engine's throttle body for a guaranteed power gain

K&N 99-0506EU is a 204 milliliter aerosol can of air filter oil

Improving throttle response

The K&N 69-1008TS Typhoon air intake system is a free-flowing