{"product_id":"k-n-rk-3909-1-filter-kit-for-harley-davidson","title":"K\u0026N RK-3909-1 Filter Kit for Harley Davidson","description":"\u003c!-- show up to 2 reviews by default --\u003e \n\u003cp\u003e \u003cspan\u003eK\u0026amp;N's RK Series was developed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K\u0026amp;N High-Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum backplate 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. The RK-3910-1 comes with a larger air filter and longer spacers than the RK-3909-1.\u003c\/span\u003e \u003c\/p\u003e","brand":"车载用品","offers":[{"title":"Default Title","offer_id":42268994273448,"sku":"","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0463\/1176\/8232\/products\/81N0CYHcqVL._AC_SL1500.jpg?v=1651833860","url":"https:\/\/bisonclick-0816-0005.myshopify.com\/products\/k-n-rk-3909-1-filter-kit-for-harley-davidson","provider":"车载用品","version":"1.0","type":"link"}