* O.E.M replacement filters designed to fit inside the factory airbox * Epoxy-coated aluminum wire mesh incorporated into a back-fire screen to protect the filter element * Larger surface area over foam filters offers longer service intervals in dusty conditions * Developed with a sealing bead…

* Designed for todays high performance synthetic oils, unaffected by racing fuels * Check valve prevents oil drainback and dry starts * New pressure relief valve * 17 mm wrench nut for easy service (drilled for safety wire security) * 50% thicker wall construction, stronger inner core, heavy base…

* Specially designed two ply air filter for race specific engines * Two layers of cotton to provide even lower air restriction than K&N High Flow Replacement Air Filter for street vehicles * Fuel management modifications will be necessary with this racing filter * Produces more air-flow CFM (cubic…

Pro Design Airbox Filter Kits replace the faulty stock and restrictive air filter and adaptor to give you the performance you want. Your filter can now remain in place without the restriction inherent with the stock mounting lid. Includes a positive O-Ring seal, 2 Stage High Volume Foam Air Filter,…

When selecting one of K&N's universal oval air filters, you should consider the following dimensions as they relate to the specification chart: * Mounting Flange Inside DiameterThis is the most critical dimension and should be very close to the diameter of the application's inlet flanges. The flanges…

* For stock engines using the stock airbox, air filter and stock pipe * Fully adjustable to allow the use of a well designed aftermarket pipe and stock replacement air filter like K&N * Designed to improve throttle response and driveability and in most cases power increases of approximately 5%…

When selecting one of K&N's universal round straight air filters, you should consider the following dimensions as they relate to the specification chart: * Mounting Flange Inside Diameter This is the most critical dimension and should be very close to the diameter of the application's inlet flange. The…

* XStream technology integrated into a two piece High-Flow Air Filter * Increased filtration area provides more air-flow * Four layers of woven premium cotton media allow for increased filtration * Optimum air flow for all performance 4-stroke off-road motorcycles * Takes performance to the next…

* High volume, low pressure in-line filters * Easy to clean by simply back flushing

A six-step maintenance system designed to clean any K&N Filtercharger Air Filter. Restores air flow efficiency so your Filtercharger performs like new! * K&Ns #1 selling recharger kit * Designed to recharge any K&N filter charger * Kit contains: 6.5 oz. spray oil, 12 oz. filter cleaner and decal

Pro Design Airbox Filter Kits replace the faulty stock and restrictive air filter and adaptor to give you the performance you want. Your filter can now remain in place without the restriction inherent with the stock mounting lid. Includes a positive O-Ring seal, 2 Stage High Volume Foam Air Filter,…

…the outside diameter of your carburetor to find the correct I.D. (Inside diameter) size of filter you need for your vehicle * When selecting one of K&N's universal round tapered air filters, you should consider the following dimensions as they relate to the specification chart: * Mounting Flange Inside…

* Capable of supporting engine builds that produce up to 140+ HP Since its inception, the Hypercharger has continued to evolve to meet the needs of the performance minded rider * Mike Rolands testing and development of our Wild Things Performance Products provided an incredible wealth of…

* Made of breathable, durable polyester with an elastic enclosure * Fits over K&N filter and stops small dirt particles * Minimal restriction to the airflow of the filter * Designed to extend service intervals * For use in very dusty conditions * Can be cleaned and re-used * Instructions…

* Replacement filter element for Air Cleaner for Yamaha Road Star

* Designed to extend service interval * Made of durable polyester * Stops dirt particles as small as .005 * Only adds a 10% air flow restriction * For use in very dusty conditions * Black only