{"product_id":"k-n-rk-3930-intake-system-harley-davidson","title":"K\u0026 N RK-3930 Intake System-Harley Davidson","description":"\u003cp\u003eThe K\u0026amp; N RK-3930 Air Intake System was designed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K\u0026amp; N High-Flow Air Filter, this 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.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncreases horsepower\u003c\/li\u003e\n\u003cli\u003eWashable and reusable\u003c\/li\u003e\n\u003cli\u003eFits inside stock cover\u003c\/li\u003e\n\u003cli\u003eProvides increased air flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Box Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Color:\u003c\/strong\u003e Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Height:\u003c\/strong\u003e 1.625 in (41 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Inside Diameter:\u003c\/strong\u003e 6.188 in (157 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Material:\u003c\/strong\u003e Cotton Gauze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Outlet Shape:\u003c\/strong\u003e Not Flanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Shape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Washable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCARB EO Number:\u003c\/strong\u003e D-269-55\/59\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp Color\/Finish:\u003c\/strong\u003e Not Applicable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp Material:\u003c\/strong\u003e No Clamps Required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamp Style:\u003c\/strong\u003e No Clamps Required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamps Included:\u003c\/strong\u003e No Clamps Included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor \/ Finish:\u003c\/strong\u003e Red Filter, Aluminum Top\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCouplers Included:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Horsepower Gain:\u003c\/strong\u003e 8.43 HP @ 3700 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Diameter:\u003c\/strong\u003e 2.469 in (63 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMass Air Flow Sensor Adapter Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Flange:\u003c\/strong\u003e 2.469 in (63 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 1.875 in (48 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Material:\u003c\/strong\u003e Paperboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Style:\u003c\/strong\u003e Motorcycle Intake System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Filter:\u003c\/strong\u003e E-3972\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 9 Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStreet Legal In All US States:\u003c\/strong\u003e Legal for use in all 50 states.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e No-Hassle Lifetime Limited warranty\u003c\/p\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":45520747069575,"sku":"KNRK-3930","price":302.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/4008\/1543\/files\/RK-3930.jpg?v=1788268700","url":"https:\/\/checkout.northernperformance.ca\/products\/k-n-rk-3930-intake-system-harley-davidson","provider":"Northern Performance","version":"1.0","type":"link"}