K&N Universal X-Stream Clamp-On Air Filter (RX-3900-1)

K&N Universal X-Stream Clamp-On Air Filter (RX-3900-1)K&N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval. The XStream Air Filter provides awesome air flow and outstanding filtration. When racing, in any environment, racers need all the protection and airflow they can get. K&N delivers. All K&N universal air filters are constructed with ultra strong molded

The carbon fiber element adds to the light-weight design and gives this air filter a smooth glass like finish

3 inches in outside diameter with a 1 inch flange which is designed to push on to the existing rubber breather grommets

000 miles before servicing is needed depending on driving conditions

Designed for synthetic

Includes air filter cleaner and air filter oil

it will provide a more constant supply of clean air when driving through extremely dusty conditions

1-3/4 inches long

This K&N Stubstack is designed to be used on Holley 390-850 cfm square bore carbs (4150/4160)

The heavy-duty canister is engineered to be exceptionally durable

K&N custom air cleaners are designed for use on older Harley-Davidson motorcycles

backed by the Million Mile Limited Warranty

Carbon fiber composites have taken the method traditionally associated with fiberglass and perfected it to a precise science with outstanding performance as the result