{"product_id":"k-n-twin-cam-rk-series-street-metal-o-s-air-cleaner-assy","title":"K\u0026N Twin Cam RK series Street Metal O.S - air cleaner assy","description":"\u003cp\u003eHigh Flow intake system. Re-use stock air cleaner cover for stock looks. Includes a special backplate, internal velocity stack, built-in breathers, oversized air filter element and hardware. \r\nA K\u0026amp;N Dyno test of this RK-series air cleaner assembly on a 2008 Street Bob showed an increase of 6.54 HP@5100 RPM, a 2014 103\" Ultra produced an additional 8.33 HP@4670RPM. \r\nThe K\u0026amp;N RK-Series air cleaner assemblies are truly stealthy air cleaners since the stock air cleaner cover is re-used. Power increase is realized by replacing the stock filter and backplate. A special K\u0026amp;N powder coated aluminum backplate, with Dyno-tuned velocity stack, is required to house the oversized K\u0026amp;N air cleaner element. Built-in breathers replace the stock external breathers. Careful design made it possible to re-fit the stock air cleaner cover for a stock un-touched look.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Aircleaner assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e RK-3942\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":63279629304138,"sku":"MSH-904692","price":1389.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/904692k.jpg?v=1787567819","url":"https:\/\/partsdenmark.dk\/products\/k-n-twin-cam-rk-series-street-metal-o-s-air-cleaner-assy","provider":"Parts Denmark","version":"1.0","type":"link"}