{"product_id":"fr1504e-rear-axle-ses-suspension-enhancement-system-kit-for-15-20-ford-f-150-4wd","title":"FR1504E Rear Axle SES Suspension Enhancement System Kit For 15-20 Ford F-150 4WD","description":"\u003ch2\u003eSES Suspension Enhancement System Kit for Ford F-150 4WD\u003c\/h2\u003e\u003cp\u003eRear axle suspension enhancement system kit engineered to improve load handling and ride stability on 2015–2020 Ford F-150 4WD models, referencing OEM cross-reference FR1504E.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis SES Suspension Enhancement System Kit is a comprehensive rear axle upgrade designed to reinforce the factory suspension on 2015–2020 Ford F-150 4WD trucks. It actively reduces sag and body roll when towing or hauling heavy payloads, making the FR1504E rear axle SES Suspension Enhancement System Kit an essential solution for contractors and fleet operators who demand consistent, controlled ride quality under load.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eProgressive-rate coil design maintains factory ride comfort when unloaded\u003c\/li\u003e\n\u003cli\u003eHeavy-gauge steel construction resists deformation under sustained cargo weight\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant powder-coat finish stands up to road salt and moisture\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on configuration eliminates the need for welding or frame modification\u003c\/li\u003e\n\u003cli\u003eTuned spring rate reduces rear squat and improves steering response during towing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Ford F-150 4WD 2015\u003c\/li\u003e\n\u003cli\u003efor Ford F-150 4WD 2016\u003c\/li\u003e\n\u003cli\u003efor Ford F-150 4WD 2017\u003c\/li\u003e\n\u003cli\u003efor Ford F-150 4WD 2018\u003c\/li\u003e\n\u003cli\u003efor Ford F-150 4WD 2019\u003c\/li\u003e\n\u003cli\u003efor Ford F-150 4WD 2020\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMaintains level ride height when carrying loaded bed toolboxes\u003c\/li\u003e\n\u003cli\u003eReduces rear-end sag while towing enclosed job-site trailers\u003c\/li\u003e\n\u003cli\u003eStabilizes chassis motion on uneven gravel and dirt access roads\u003c\/li\u003e\n\u003cli\u003eSupports consistent braking balance with heavy cargo aboard\u003c\/li\u003e\n\u003cli\u003ePreserves tire contact and driveline alignment under maximum payload\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFR1504E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuspension Enhancement System Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrivetrain Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is professional alignment recommended after installing this rear axle suspension enhancement system kit on an F-150 4WD? \u003cstrong\u003eA:\u003c\/strong\u003e A four-wheel alignment check is advised after installation to confirm that rear thrust angle and steering center remain within factory range, particularly when the truck carries consistent heavy loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this FR1504E SES kit be used alongside factory rear blocks or air helper springs? \u003cstrong\u003eA:\u003c\/strong\u003e It may be paired with factory rear blocks, but mixing with aftermarket air helper springs requires verifying clearance at full compression to avoid coil bind or bracket contact during suspension articulation.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44965107433558,"sku":"ZZ3A01463","price":455.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_addbb836-0582-4ff6-97a6-3ed01c826656.jpg?v=1781653839","url":"https:\/\/www.solidspare.com\/products\/fr1504e-rear-axle-ses-suspension-enhancement-system-kit-for-15-20-ford-f-150-4wd","provider":"Solid Spare","version":"1.0","type":"link"}