{"product_id":"k-n-performance-air-intake-system-57s-4000","title":"K\u0026N Performance Air Intake System 57S-4000","description":"\u003cp\u003eAn efficient performance intake system optimising air flow to the engine for measurable gains in power and response. The reusable air filter eliminates replacement costs and maintains reliable filtration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReusable air filter element—service every 50,000 miles using K\u0026amp;N cleaning kit\u003c\/li\u003e\n\u003cli\u003eOptimised ducting geometry improves air velocity without flow restriction\u003c\/li\u003e\n\u003cli\u003eDirect OEM-compatible installation—no engine bay modifications required\u003c\/li\u003e\n\u003cli\u003eModel 57S-4000 specification engineered for target application fitment\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":56615209468284,"sku":"57S-4000","price":229.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/9208\/4867\/files\/57s-4000.jpg?v=1775813979","url":"https:\/\/fdracing.co.uk\/products\/k-n-performance-air-intake-system-57s-4000","provider":"FD Racing","version":"1.0","type":"link"}