{"product_id":"umi-performance-67-72-gm-a-body-spring-kit-factory-height","title":"UMI Performance 67-72 GM A-Body Spring Kit Factory Height","description":"\u003ch4\u003eRestore Correct Ride Height Without Sacrificing Classic Muscle Car Handling\u003c\/h4\u003e\n\u003cp\u003eThe UMI Performance UMI4049 spring kit is built for 1967 to 1972 GM A-Body owners who want factory ride height restored with modern manufacturing precision. This kit pairs a progressive front spring rate with a firmer rear spring rate to correct the nose-high stance common on aging A-Body suspensions while improving handling balance under acceleration and cornering. Each spring is cold wound from chrome silicon spring steel and finished in a durable powder coat for long-term corrosion resistance, making this kit a straightforward bolt-in upgrade for Chevelle, GTO, Cutlass, and Skylark platforms.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eChrome silicon spring steel construction for consistent spring rate and long service life\u003c\/li\u003e\n\u003cli\u003ePowder coat finish resists corrosion and chipping in daily and weekend driving conditions\u003c\/li\u003e\n\u003cli\u003e530 lb\/in front spring rate paired with 130 lb\/in rear spring rate for balanced handling\u003c\/li\u003e\n\u003cli\u003eRestores factory ride height on sagged or aging A-Body suspension setups\u003c\/li\u003e\n\u003cli\u003eDirect bolt-in installation using factory mounting points, no cutting or drilling required\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for 1967 to 1972 GM A-Body chassis platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eGran Sport\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970-1972\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eGS\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1968-1969\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eGS 350\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1968-1969\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eGS 400\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970-1972\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eGS 455\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eSkylark\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1969\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eSpecial\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eBuick\u003c\/td\u003e\n\u003ctd\u003eSportwagon\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eEl Camino\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eMalibu\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970-1972\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eMonte Carlo\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1971\u003c\/td\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003e442\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eCutlass\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eF85\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003eOldsmobile\u003c\/td\u003e\n\u003ctd\u003eVista Cruiser\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGrand Prix\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGTO\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1972\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eLeMans\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1970\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eTempest\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971-1972\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSprint\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eUMI4049\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Spring Rate\u003c\/td\u003e\n\u003ctd\u003e530 lb\/in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Spring Rate\u003c\/td\u003e\n\u003ctd\u003e130 lb\/in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eChrome Silicon Spring Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003ePowder Coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRide Height\u003c\/td\u003e\n\u003ctd\u003eFactory Height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot published by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTwo UMI4049 front coil springs\u003c\/li\u003e\n\u003cli\u003eTwo UMI4049 rear coil springs\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout UMI Performance\u003c\/h4\u003e\n\u003cp\u003eUMI Performance specializes in suspension components for GM muscle cars, building chassis parts that improve handling while preserving the classic ride characteristics owners expect. The UMI4049 kit is manufactured in-house with a focus on correct spring rates and factory-correct fitment for A-Body restorations and daily drivers alike.\u003c\/p\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the UMI4049?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe UMI4049 is a front and rear coil spring kit for 1967 to 1972 GM A-Body vehicles that restores factory ride height using a 530 lb\/in front rate and 130 lb\/in rear rate. UMI4049 is a direct bolt-in replacement requiring no cutting or drilling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich vehicles fit this spring kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit fits 1967 to 1972 GM A-Body platforms including the Chevrolet Chevelle, El Camino, and Monte Carlo, Buick Gran Sport and Skylark, Oldsmobile Cutlass and 442, and Pontiac GTO, LeMans, and Grand Prix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit lower or raise ride height?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNeither. This kit is designed to restore the vehicle's original factory ride height, correcting sag that develops in aging suspension components over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat material are the springs made from?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe springs are cold wound from chrome silicon spring steel and finished with a powder coat for corrosion resistance and durability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a direct bolt-in installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. This kit uses factory mounting locations and does not require cutting, drilling, or permanent modification to install.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the front and rear spring rates?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit uses a 530 lb\/in front spring rate and a 130 lb\/in rear spring rate, a combination tuned to balance handling while maintaining factory ride height across the A-Body platform.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this kit be installed on a GMC Sprint?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 1971 to 1972 GMC Sprint shares the GM A-Body platform and is a confirmed fitment for this spring kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit work with factory sway bars and shocks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. This kit is designed to work alongside factory or upgraded sway bars and shocks without requiring additional modifications for basic installation.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSafely raise and support the vehicle on jack stands, then remove the wheels.\u003c\/li\u003e\n\u003cli\u003eSupport the lower control arm with a jack and disconnect the sway bar end link if equipped.\u003c\/li\u003e\n\u003cli\u003eCarefully release spring tension and remove the factory front and rear coil springs.\u003c\/li\u003e\n\u003cli\u003eInstall the springs into the factory upper and lower spring pockets.\u003c\/li\u003e\n\u003cli\u003eReconnect the sway bar end link and lower the control arm to seat the new springs.\u003c\/li\u003e\n\u003cli\u003eReinstall the wheels, lower the vehicle, and torque all hardware to factory specifications.\u003c\/li\u003e\n\u003cli\u003ePerform a full wheel alignment after installation to confirm proper ride height and handling.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"UMI Performance","offers":[{"title":"Default Title","offer_id":46318459027535,"sku":"UMI4049","price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/umi4049-67-72-gm-a-body-spring-kit-factory-height_8c6081c3-79d8-4997-9b17-46c291d40ca6.webp?v=1785502392","url":"https:\/\/www.blackopsautoworks.com\/products\/umi-performance-67-72-gm-a-body-spring-kit-factory-height","provider":"Black Ops Auto Works","version":"1.0","type":"link"}