{"product_id":"kn-drop-in-air-filter-2013-18-focus-st16-18-focus-rs","title":"K\u0026N Drop-In Air Filter, 2013-18 Focus ST\/16-18 Focus RS","description":"\u003cp\u003eWant to keep your factory air box and improve the performance and gas mileage of your 2013-18 Focus ST or 2016-18 Focus RS ?\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThis K\u0026amp;N drop in filter is just what you need! You can gain a few horsepower with this, and have a reusable\/washable air filter that will save you money over the cost of buying new factory air filters! Installation takes about 5 minutes with a 8mm socket.\u003cbr\u003e\u003cbr\u003ePlease note: The photo above of the filter in the airbox is how it looks with the airbox lid off. We recommend you re-install the airbox lid after installing the K\u0026amp;N air filter.\u003c\/p\u003e","brand":"Modern Performance","offers":[{"title":"Default Title","offer_id":42945358757966,"sku":"214100","price":67.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/2902\/0238\/files\/1494_6955_popup.jpg?v=1767136818","url":"https:\/\/www.modernperformance.com\/products\/kn-drop-in-air-filter-2013-18-focus-st16-18-focus-rs","provider":"Modern Performance","version":"1.0","type":"link"}