{"product_id":"swift-spec-r-lowering-springs-for-2015-2018-bmw-m3-f80","title":"Swift Spec-R Lowering Springs for 2015-2018 BMW M3 (F80)","description":"\u003cp\u003eThese Swift Spec-R lowering springs fit the 2015-2018 BMW M3.\u003c\/p\u003e\u003cp\u003eThe Swift Spec-R Lowering Springs for the 2015-2018 BMW M3 (F80) eliminate the excessive wheel gap on the F80 while optimizing suspension geometry for serious track use. These F80 M3 lowering springs provide an approximate 1.0\" front and 0.4\" rear drop with spring rates of 4.8 Kg\/mm front and 12.8 Kg\/mm rear, calibrated for the F80's adaptive M suspension. Manufactured in Japan from Swift's proprietary H5S.TW spring steel, these M3 springs deliver reduced unsprung weight, faster transient response, and the confidence-inspiring body control that F80 owners need for HPDE and time attack competition.\u003c\/p\u003e\n\u003ch3\u003eSwift Spec-R Technology\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProprietary H5S.TW high-tensile spring steel, manufactured in Japan\u003c\/li\u003e\n\u003cli\u003eOptimized ride height to maximize suspension geometry at lowered position\u003c\/li\u003e\n\u003cli\u003eIncreased spring rates tuned to usable shock stroke for balanced performance\u003c\/li\u003e\n\u003cli\u003eFewer coils reduce unsprung mass and completely eliminate coil bind\u003c\/li\u003e\n\u003cli\u003eQuicker transient response for improved traction and road feedback\u003c\/li\u003e\n\u003cli\u003eVehicle-specific bump rubber engineering to prevent bottoming out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrack-proven in HPDE and SCCA competition\u003c\/li\u003e\n\u003cli\u003eLowered center of gravity for improved cornering grip\u003c\/li\u003e\n\u003cli\u003eReduced body roll and sharper handling response\u003c\/li\u003e\n\u003cli\u003eComfortable enough for daily driving\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM and aftermarket shocks\/struts\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation with no modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable class=\"table table-striped table-primary\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e4X909R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003eSwift Spec-R Lowering Springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2015-2018 BMW M3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Code\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Front\u003c\/td\u003e\n\u003ctd\u003e4.8 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Rear\u003c\/td\u003e\n\u003ctd\u003e12.8 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproximate Drop - Front\u003c\/td\u003e\n\u003ctd\u003e1.0\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproximate Drop - Rear\u003c\/td\u003e\n\u003ctd\u003e0.4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNotes\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e2015 BMW M3 (F80)\u003c\/li\u003e\n\u003cli\u003e2016 BMW M3 (F80)\u003c\/li\u003e\n\u003cli\u003e2017 BMW M3 (F80)\u003c\/li\u003e\n\u003cli\u003e2018 BMW M3 (F80)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Springs","offers":[{"title":"Default Title","offer_id":40185258672188,"sku":"4X909R","price":397.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/products\/swift-spec-r-lowering-springs-for-2014-2018-bmw-m3-f80-4x909r-1194332075.jpg?v=1761840364","url":"https:\/\/www.springrates.com\/products\/swift-spec-r-lowering-springs-for-2015-2018-bmw-m3-f80","provider":"SPRINGRATES","version":"1.0","type":"link"}