Bags, Luggage & Racks Custom Accessories & Trim More Ways To Shop Riding Pants & Chaps Bandanas, Wallets & Accessories Gear for New Riders Willie G. Limited Edition Tees Check out popular questions We aim to reply within 24 hours By checking the box and clicking continue below, the individual acknowledges and agrees to the following terms and conditions: I acknowledge that I have read the notice below. In order for performance components to be listed “for use on a public highway” there is a certification process that needs to be met. process varies based on the component (e.g. the process for a head lamp bulb and an exhaust system is entirely different). If a product manufacturer opts not to certify their performance part for use on a public highway, the part is labeled and is intended for “off-road use only”. with the OFF-ROAD USE stamp are not legal to use and operate on public roads. hold no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance product.

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K&N RK Series High-Flow Air Intake For Harley-Davidson® Motorcycles Guaranteed increase in horsepower Replaces the stock air filter and cleaner backing plate assembly Fits behind the OE air cleaner cover maintaining the factory appearance Washable, oversized K&N high-flow air filter equals longer life Oversized black, powder coated aluminum backing plate provides solid mounting Dyno tuned velocity stack directs airflow to engine Built in breathers replace external OE breathers☨ Includes K&N Million Mile Limited Warranty® K&N Harley-Davidson® RK Series Air Intake Systems K&N's RK Series air intake systems have been developed to get more horsepower from your Harley-Davidson® motorcycle. Built around the legendary K&N high-flow air filter, the RK series assembly includes an innovative powder coated, billet aluminum back plate that eliminates external breathers and features a built-in, dyno tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration.

This RK series assembly retains a factory appearance by utilizing the stock air cleaner cover. Some of the more popular RK series air intake systems for Harley-Davidson®: Part: Air Intake RK-3930 Fits: Select 2008-2013 Touring Models* Estimated Horsepower Gain: +8.43HP on 2008 Harley Davidson Road Glide FLTR 1584 Estimated Horsepower Gain: +5.66HP on 2011 Harley Davidson Electra Glide Limited 1584 Part: Air Intake RK-3929 Fits: Select 2004-2014 Sportster Models* Estimated Horsepower Gain: +4.4HP on 2008 Harley Davidson Sportster Custom 883 Estimated Horsepower Gain: +7.81HP on 2009 Harley Davidson Sportster 1200 Nightster Part: Air Intake RK-3931 Fits: Select 2008-2016 Sportster Models* Estimated Horsepower Gain: +6.54HP on 2008 Harley Davidson Dyna Street Bob Part: Air Intake RK-3909-1 with 1-5/8" Tall Filter Fits: Select 1999-2012 Touring, Dyna & 2000-2012 Softail Models* Estimated Horsepower Gain: +9.59hp on 2010 Harley Davidson Fat Boy 96ci

Estimated Horsepower Gain: +6.05hp on 2006 Harley Davidson Road King 88ci Part: Air Intake RK-3910-1 with 2-1/4" Tall Filter Estimated Horsepower Gain: +10.76hp on 2010 Harley Davidson Fat Boy 96ci *Some air intakes are not legal for highway use in California or other states adopting California emission standards. Click the part number for up-to-date information on emissions legality for specific parts on specific vehicles. For a list of other CARB adoption states visit the Legal in Most States page. Harley-Davidson® Parts & Accessories Hand & Foot Contols Oil Coolers & Gauges Rider & Passenger Comfort Men's Steel Toe Work Hoodies, Sweatshirts & Sweaters Belts & Belt Buckles Hats, Caps & Headwraps Jeans, Pants & Chaps Modular & Full Face Money Clips & Front Pocket Keychains, Fobs & Lanyards Ivy & Flat Top Bandanas & Skull Caps Wallets, Clutches & Accessories Hats, Caps & Hair Accessories

Half & 3/4 Sleeve Harley-Davidson® Pink Label Collection Harley-Davidson® Black Label Collection DYNA Backrests & Racks DYNA Chassis & Tank Trim DYNA Chassis Trim | DYNA Foot Controls & Highway Pegs DYNA Saddlebags & Luggage Softail Backrests & Racks Softail Chassis Trim | Softail Engine Guards & Highway Pegs Softail Saddlebags & Luggage Softail Tank & Console Trim Sportster Backrests & Racks Sportster Chassis Trim | Sportster Engine Guards & Soft Lowers Sportster Foot Controls & Highway Pegs Sportster Saddlebags & Luggage Street Backrests and Racks Street Engine Guards | Street Hand & Foot Controls Street Saddlebags & Luggage Street Screamin' Eagle® Performance Street Wheels & Axle Trim Touring & Trike Auxiliary Power & Charging Touring & Trike Backrests & Racks Touring & Trike Chassis Trim | Touring & Trike Engine Guards & Center Stands Touring & Trike Fairing Lowers & Accessories

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Swingarm, Fork & Sissy Bar Bags Touring Luggage & Accessories Windshield & Fairing Bags Air Filters & Spark Plugs Accessory Mounts - Kuryakyn Covers, Trims & Accents - Kuryakyn Handlebar Controls, Grips & Mirrors - Kuryakyn Luggage, Organizers and Storage Covers - Kuryakyn Pegs & Foot Controls - Kuryakyn Touring & Comfort - Kuryakyn Windshields & Air Management - Kuryakyn Backpacks, Bags & Luggage Car & Truck Accessories Pocket Knives & Lighters Clocks & Wall Decor Water Bottles, Coffee & Travel Mugs H.O.G. Milwaukee Chapter #3833 Friends of the House Screamin' Eagle air cleaner parts and other engine components. Also find Harley-Davidson® tools for easy repair. Stay competitive with the proper parts. Can’t find what you’re looking for? Contact The House On-Line Customer Service Team at . 6221 West Layton Avenue Mon, Tues, Th, Fri – 9am-7pm Wed – 9am to 9pm Sat – 9am to 5pm