{"product_id":"1957-59-ford-car-superslide-multi-leaf-rear-drop-leaf-springs-pair-posies","title":"1957-59 Ford Car SuperSlide Multi-Leaf Rear Drop Leaf Springs (Pair) - Posies","description":"\u003cp\u003eThe \u003cb\u003e1957–1959 Ford Car SuperSlide Multi-Leaf Rear Drop Leaf Springs (Pair)\u003c\/b\u003e by Posies (Part #357) is a direct bolt-in rear lowering solution engineered specifically for full-size 1957, 1958, and 1959 Ford passenger cars (Fairlane, Galaxie, Custom 300, Ranchero, and Station Wagons).\u003c\/p\u003e\n\u003cp\u003eDesigned to lower the vehicle's rear end by \u003cb\u003e3 inches below stock ride height\u003c\/b\u003e, these spring packs deliver a classic lowered street rod profile while dramatically improving ride quality over worn, rigid factory multi-leaf packs.\u003c\/p\u003e\n\u003ch3\u003eProduct Overview \u0026amp; Performance\u003c\/h3\u003e\n\u003cp\u003eOriginal late-1950s Ford leaf springs suffer from inter-leaf binding, rust accumulation, and severe metal-on-metal friction that causes a stiff, harsh ride over time. Posies solves this by integrating their signature moly-nylon SuperSlide buttons between leaf tips. This eliminates leaf-on-leaf grinding, allowing the spring leaves to flex freely for a smooth, quiet, and compliant ride.\u003c\/p\u003e\n\u003cp\u003eThese springs install directly into the original 1957–1959 Ford factory frame mounts and rear shackle locations without cutting, welding, or chassis modification.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Design Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e3\" Custom Lowered Stance:\u003c\/b\u003e Drops the rear chassis 3 inches below original stock height for a level, sleek profile without sacrificing suspension travel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDirect Chassis Bolt-In:\u003c\/b\u003e Engineered to drop into stock frame hangers and shackle mounts on all full-size 1957–1959 Ford chassis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSuperSlide Inter-Leaf Damping:\u003c\/b\u003e Moly-Nylon friction-reduction buttons eliminate metal-on-metal squeaks, rust binding, and stiff suspension motion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePre-Installed Front Eye Bushings:\u003c\/b\u003e Comes complete with pre-pressed front spring eye bushings to streamline installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAmerican-Made Quality:\u003c\/b\u003e Hand-assembled and tour-tested in the USA using premium high-tensile tempered spring steel with proven 100,000+ mile reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature \/ Metric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Specification Detail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eManufacturer \u0026amp; Part #\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePosies Rods \u0026amp; Customs (P\/N: 357)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eVehicle Application\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1957, 1958, and 1959 Full-Size Ford Passenger Cars \u0026amp; Rancheros\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eStance Drop\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.0\" Lowered Rear Stance\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eInter-Leaf Damping\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMoly-Nylon SuperSlide Friction-Reduction Buttons\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eIncluded Hardware\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSold as Pair; Pre-Installed Front Spring Eye Bushings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003ePackage Weight \u0026amp; Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eApprox. 76.0 lbs per Pair (55.00\" L x 7.00\" W x 5.00\" H)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Notes \u0026amp; Recommendations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAssociated Mounting Hardware:\u003c\/b\u003e To ensure long-term reliability and safety, Posies recommends pairing these springs with new replacement front eye bolt kits and rear shackles to replace rusted factory mounting hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDrive Line Pinion Angle:\u003c\/b\u003e When dropping full-size 1950s Fords 3 inches, verify drive shaft working angles and rear axle pinion angle during installation to maintain smooth driveline operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Posies","offers":[{"title":"Default Title","offer_id":52645441568900,"sku":"POS 357","price":595.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0286\/1180\/5316\/files\/305_4951Merc_323bb617-7d98-427c-8112-f9a8c6a59b2f.webp?v=1786028612","url":"https:\/\/hotrodhardware.com\/products\/1957-59-ford-car-superslide-multi-leaf-rear-drop-leaf-springs-pair-posies","provider":"Hot Rod Hardware","version":"1.0","type":"link"}