{"product_id":"ast-07-2013-10-2020-bmw-4-lowering-springs-40mm-40mm","title":"AST 07\/2013-10\/2020 BMW 4 Lowering Springs - 40mm\/40mm","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eASTLS-21-036\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAST 07\/2013-10\/2020 BMW 4 Lowering Springs - 40mm\/40mm\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eAST Lowering Springs deliver a precise 40mm drop front and rear for 07\/2013-10\/2020 BMW 4 Series F32\/F33\/F36 models. These direct OEM replacements lower the center of gravity to sharpen handling while retaining familiar ride comfort. Progressive spring rates ensure balanced performance on street or track.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40mm Front\/Rear Drop:\u003c\/strong\u003e Lowers ride height evenly for improved stance aerodynamics and cornering stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgressive Spring Design:\u003c\/strong\u003e Balances firmness for sporty response with compliance for daily driving comfort\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle-Specific Engineering:\u003c\/strong\u003e Developed exclusively for BMW 4 Series F32\/F33\/F36 chassis ensures bolt-on fit without modifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Materials:\u003c\/strong\u003e High-tensile steel coiled on Wafios machines for durability and consistent performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime Warranty:\u003c\/strong\u003e Guaranteed against breakage for long-term reliability and confidence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDirect OEM spring replacement requires no additional hardware\u003c\/li\u003e\n\u003cli\u003ePair with OEM or aftermarket dampers for best results\u003c\/li\u003e\n\u003cli\u003ePackaged securely to prevent damage during transit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eFront and rear springs swap directly with OEM units\u003c\/li\u003e\n\u003cli\u003eWheel alignment required post-installation for optimal tire wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e428i F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e428i xDrive F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e430i F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e435i F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e435i xDrive F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e440i F32 Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e428i F33 Convertible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003e435i F33 Convertible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eGran Coupe F36 428i\/430i\/435i\/440i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose AST?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven suspension expertise across 3000+ vehicle models since 1966\u003c\/li\u003e\n\u003cli\u003eHand-built quality using advanced Wafios coiling technology\u003c\/li\u003e\n\u003cli\u003eExact fitment engineering for BMW precision and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will these fit BMW M4 models?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Designed for non-M 4 Series F32\/F33\/F36 only M4 requires separate springs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What spring material is used?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e High-strength steel alloy for corrosion resistance and fatigue strength\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What does the warranty cover?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Lifetime protection against manufacturing defects and breakage under normal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Sturdy box 20 x 10 x 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 24 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AST","offers":[{"title":"Default Title","offer_id":42717105946703,"sku":"ASTASTLS-21-036","price":269.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/ast-072013-102020-bmw-4-lowering-springs-40mm40mm-ast.png?v=1771570333","url":"https:\/\/www.blackopsautoworks.com\/products\/ast-07-2013-10-2020-bmw-4-lowering-springs-40mm-40mm","provider":"Black Ops Auto Works","version":"1.0","type":"link"}