{"product_id":"umi-performance-1982-2003-s10-s15-upper-lower-front-delrin-a-arm-kit-1-2-taller-upper-ball-joints-1","title":"UMI Performance 1982-2003 S10\/S15 Lower A-Arms, Coilover Only, Competition","description":"\u003cp\u003eUMI’s 3057-1 lower a-arms arms feature a relocated ball joint cup which offers 10 degrees caster when used with our P\/N 3056 upper arm while keeping the spindle pin centered. The 3\/4” taller Howe ball joint works to optimize the roll center, lower the center of gravity and lowers the ride height ½”. The double shear shock mount is removable which permits spring and shock changes at the track in minutes without disconnecting the ball joints. An aluminum steering stop is adjustable and limits steering lock to prevent tire and wheel damage. UMI designed Delrin bushings help the 3057-1 travel smoothly for bind-free operation whether running street, strip, road race or auto-x. Also included is a double shear sway bar mounting system which accepts UMI sway bars and many other manufacturers stock location aftermarket units. Available in UMI red or black powder coat. 100% designed, manufactured and raced with pride in the USA. Battle tested on the iconic UMI Green Machine\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePerformance note:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eUMI recommends adding the P\/N 3060 bump steer kit for optimal performance. Lower a-arms work best when used in conjunction with caster corrected upper a-arms.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1-¼” and 1-½” USA DOM tubing construction.\u003c\/li\u003e\n\u003cli\u003eCNC laser cut components throughout.\u003c\/li\u003e\n\u003cli\u003e10 degrees caster potential when combined with\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.umiperformance.com\/home\/product\/front-upper-a-arms-adjustable-1-taller-ball-joints\/\" target=\"_blank\"\u003eUMI 3056\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eupper a-arm.\u003c\/li\u003e\n\u003cli\u003eRemovable double shear mount to allow spring\/shock replacement without removing spindle.\u003c\/li\u003e\n\u003cli\u003eMount spacing suitable for\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.afcoracing.com\/store.aspx?itemid=3363\u0026amp;pagetitle=monotube-shocks\" target=\"_blank\"\u003eAfco\u003c\/a\u003e, Viking, Ridetech and many other aftermarket manufacturers shock\/spring combos.\u003c\/li\u003e\n\u003cli\u003eAdjustable steering stop.\u003c\/li\u003e\n\u003cli\u003eDouble shear swivel sway bar mounts and hardware work with UMI P\/N 3035 and most other factory eyelet style sway bars.\u003c\/li\u003e\n\u003cli\u003eSmooth travel Delrin bushings, UMI designed and machined.\u003c\/li\u003e\n\u003cli\u003eSaves 3.2lbs per set as compared to stock stamped a-arms.\u003c\/li\u003e\n\u003cli\u003eSuitable for competition use. Road race, auto-x, drag race, street corner carving.\u003c\/li\u003e\n\u003cli\u003eDesigned, tested, manufactured and raced in Philipsburg, PA-USA.\u003c\/li\u003e\n\u003cli\u003eOur choice on the\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/gbodyforum.com\/threads\/our-79-monte-carlo-pro-touring-project.40563\/page-76\" target=\"_blank\"\u003eUMI Green Machine\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eInstallation Notes:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eThe 3057-1 is a versatile competition a-arm that can be used with the following springs and shocks:\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eHybrid coilover kits A224-XXXR and A204-XXXR can be used with no modifications required to the car. The top of the spring fits in the original G-body spring locator in the upper frame. A204 poly bushing coilover kits require bearing kit P\/N SSB10T-APK. A224 bearing mounted coilover kits require 2 of sleeve P\/N 9556-103. UMI can supply this style shock as ready to install as well. Hybrid coilover spring rates are available up to 650lb.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e3058-650 or 3058-850 can be used with trimming to the upper spring locator. Trimming can be accomplished with a torch or slicing wheel. Once trimmed, the benefit of this style hybrid is the fact that there are a vast number of spring lengths and rates available.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e3.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eComing soon will be a full racing coilover which requires major construction in the upper spring pocket area.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e4.\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eThe 3057 cannot be used with standard size coil springs and stock mount shocks.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul type=\"disc\"\u003e\u003c\/ul\u003e","brand":"UMI Performance","offers":[{"title":"Black \/ Do Not Add Hardware Kit","offer_id":43264818053296,"sku":"3057-1-B","price":799.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Please Add Hardware Kit","offer_id":43264818086064,"sku":"3057-1-B \u0026 3802","price":827.98,"currency_code":"USD","in_stock":true},{"title":"Red \/ Do Not Add Hardware Kit","offer_id":43264818118832,"sku":"3057-1-R","price":799.99,"currency_code":"USD","in_stock":true},{"title":"Red \/ Please Add Hardware Kit","offer_id":43264818151600,"sku":"3057-1-R \u0026 3802","price":827.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1356\/0921\/files\/UMIS10Coiloverlwrarmblack.jpg?v=1710519713","url":"https:\/\/spiritandspeed.com\/products\/umi-performance-1982-2003-s10-s15-upper-lower-front-delrin-a-arm-kit-1-2-taller-upper-ball-joints-1","provider":"Level 7 Motorsports","version":"1.0","type":"link"}