K&N Racing Air Filters, Custom Air Filter Assemblies, Off-Road Air Filters and more

K&N has filters for racing, off-road vehicles, vehicles with carburetors, fuel injection lines, and more. K&N air filters are designed to improve performance, they look great, and are washable and reusable. Select an air filter type below for more information.
Racing and Custom air filters
Custom Air Filter Assemblies and Lids

Custom Air Filter Assemblies and Lids

K&N's custom air cleaner assemblies are designed show car owners and racers in mind. They incorporate good looks as well as the superior air flow. These custom air cleaner assemblies are designed for use with carburetors that use a round element air cleaner housing. K&N also offers a selection of top plate lids in various sizes.
XStream Top Air Filters

XStream Top Air Filters

XStream Air Flow Tops replace the metal top of your existing round air filter assembly giving you a larger air filter surface area. K&N also offers custom air filter assemblies and universal air filters with XStream Air Flow tops.
Universal Air Box Assemblies & Carbon Fiber Composites

Universal Air Box Assemblies & Other Carbon Fiber Composites

K&N's Carbon fiber composites have attractive cosmetic appeal and the outstanding stiffness to weight ratio that is needed to stay competitive in today's racing industry. K&N manufactures carbon fiber air filter assembly lids, carbon fiber air filter tops, carbon fiber hood scoops for racing and lightweight carbon fiber universal air box assemblies which are a must have for racers using traditional multi-siamese stacks.
Drag Racing Scoop Air Filters and Racing Cone Air Filters

Drag Racing Scoop Air Filters and Racing Cone Air Filters

Protect the motor in your drag car from dust and debris on the track and in the pits with a K&N air scoop filter. These high-flow racing air filters are washable and reusable and they are designed to fit specific scoop designs popular in drag racing.
Off-Road, UMP Air Box and VW Carburetor Air Filters

Off-Road, UMP Air Box and VW Carburetor Air Filters

K&N off- road filters are designed to provide an outstanding combination of filtration and performance. They are designed to achieve high, virtually unrestricted airflow while maintaining filtration levels critical to your engine.
Snowmobile Air Filters

Snowmobile Air Filters

K&N universal style clamp-on snowmobile air filters replace the existing airbox and OEM stock filter. K&N manufactures hundreds of sizes, shapes and lengths to fit virtually any snowmobile application.
Injector Stack Filters

Injector Stack Filters

K&N Air Filters designed to fit with cut velocity stacks or straight pieces of tubing. These high performance air filters for injector stacks are washable and reusable. Some have rubber end caps and some come with chrome end caps.
KART Air Filters and Air Boxes

KART Air Filters and Air Boxes

K&N manufactures hundreds of clamp-on universal air filters so finding one for your KART application shouldn’t be a problem. Specific air filters commonly used on KART’s are highlighted as are Go Kart air boxes which are required by some sanctioning organizations due to noise restrictions.
Fuel Injection Line Air Filters

Fuel Injection Line Air Filters

K&N Fuel Injection Line Air Filters slip onto the injector nozzle and protect the aeration hole from dust and debris.
Custom Made Air Filters

Custom Made Air Filters

K&N's Custom Air Filter Program was designed to help consumers with unique air filter needs where no air filter alternative was available. Our Custom Air Filter Program offers more than a million custom air filter combinations for your special need.