{"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.  A 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.  The 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","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":53047683383624,"sku":"904692","price":170.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2711\/4344\/files\/904692.jpg?v=1778936136","url":"https:\/\/holydeath.com\/products\/k-n-twin-cam-rk-series-street-metal-o-s-air-cleaner-assy","provider":"Holy Death Motorcycle Co.","version":"1.0","type":"link"}