{"product_id":"eibach-suspension-springs-3-0-i-d","title":"Eibach Coilover Springs 3.0\" I.D.","description":"\u003cp class=\"p1\"\u003eThe Eibach 3.0\" I.D. Off-Road Coilover Spring is designed for high-performance off-road suspension systems that demand consistent spring rates, predictable handling, and long-term durability. Built for use with 2.5\" coilover shocks, these springs are commonly found on rock crawlers, rock bouncers, Ultra4 race cars, desert race trucks, prerunners, trail rigs, and custom tube chassis builds.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEngineered as part of the Eibach Racing Off-Road (ERO) spring system, each spring is manufactured from premium spring steel and designed to maintain accurate spring rates under extreme loads and repeated suspension cycling. The lightweight design maximizes usable suspension travel while minimizing block height, making these springs ideal for both single-rate and dual-rate coilover configurations.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e(1) Eibach 3.0\" I.D. Coilover Spring\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eSelected Spring Rate\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eSelected Spring Length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSold Individually\u003c\/strong\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eBrand: \u003c\/b\u003eEibach\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eInside Diameter: \u003c\/b\u003e3.0\"\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003e3.0″ ID Length Range:\u003c\/b\u003e 10\" - 18\"\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eSpring Rates Available: \u003c\/b\u003e75 lb\/in – 650 lb\/in\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eFinish: \u003c\/b\u003eSilver Powder Coat\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eSpring Type: \u003c\/b\u003eCoilover Suspension Spring\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eCompatible with: \u003c\/b\u003e2.5\" Coilover Shocks\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eSuitable for: \u003c\/b\u003eSingle-Rate and Dual-Rate Coilover Systems\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eDesigned for: \u003c\/b\u003eOff-Road and Racing Applications\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eDesign: \u003c\/b\u003eRace-Proven ERO (Eibach Racing Off-Road)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Chrome Silicon Steel (CrS)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eManufacturing Process:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003eCold Wound\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eHeat Treated\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eShot Peened\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eEnds:\u003c\/b\u003e Squared \u0026amp; Ground at Both Ends\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eCoating:\u003c\/b\u003e Protective Silver Powder Coat\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cb\u003eIndividually Rate Tested\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eUniversal fitment for:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e2.5” I.D. coilover shock applications\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCompatible with most 2.5” off-road coilover shocks\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCommonly used on:\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003eRock Crawlers\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eRock Bouncers\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eUltra4 Cars\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eDesert Race Trucks\u003c\/li\u003e\n\u003cli class=\"li1\"\u003ePrerunners\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eTrail Rigs\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eTube Chassis Buggies\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCustom Off-Road Vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVerify spring length and spring rate requirements before ordering.\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eTech Insight\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat does 3.0\" I.D. mean?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e3.0\" I.D. refers to the inside diameter of the spring. These springs are designed specifically for use with 2.5” coilover shock bodies and matching spring hardware.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHow do I choose the correct spring rate?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eSpring rate selection depends on vehicle weight, suspension geometry, motion ratio, ride height goals, and intended use. Heavier vehicles generally require higher spring rates, while lighter vehicles often perform best with softer springs. \u003cmeta charset=\"utf-8\"\u003eYou can watch our tutorial on \u003ca href=\"https:\/\/wideopendesign.com\/blogs\/tech-videos\/mastering-the-math-how-to-calculate-spring-rates-without-a-scale\" rel=\"noopener\" target=\"_blank\"\u003eCalculating Spring Rates\u003c\/a\u003e for more information.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eCan these springs be used in a dual-rate coilover setup?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eYes. Eibach 3.0\" coilover suspension springs are commonly used in both single-rate and dual-rate suspension systems for rock crawling, racing, and recreational off-road use.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eAre these springs sold individually or in pairs?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThese springs are sold individually. Two springs are typically required per axle when building a complete suspension package.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat vehicles commonly use 3.0\" suspension springs?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e3.0\" coilover springs are frequently used on rock bouncers, Ultra4 cars, desert race trucks, custom buggies, trail rigs, and other high-performance off-road vehicles running large-diameter coilover shocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre Eibach Off-Road Coilover Springs durable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. ERO springs are engineered to maintain rate and free length even after repeated full compression cycles. They are designed to handle:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtreme suspension cycling\u003c\/li\u003e\n\u003cli\u003eHigh heat environments\u003c\/li\u003e\n\u003cli\u003eHeavy unsprung weight\u003c\/li\u003e\n\u003cli\u003eContinuous race abuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAre these coilover springs block-stable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. In dual-rate setups, the tender spring is often designed to fully compress (block) to transition into the main spring. ERO springs are built to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSafely block repeatedly\u003c\/li\u003e\n\u003cli\u003eMaintain consistent transition points\u003c\/li\u003e\n\u003cli\u003eResist sagging or rate loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Eibach","offers":[{"title":"10\" \/ 100lb\/in.","offer_id":56646181552294,"sku":"EIB1000.300.0100S","price":102.0,"currency_code":"USD","in_stock":true},{"title":"10\" \/ 150lb\/in.","offer_id":56646181585062,"sku":"EIB1000.300.0150S","price":102.0,"currency_code":"USD","in_stock":true},{"title":"10\" \/ 200lb\/in.","offer_id":56646181617830,"sku":"EIB1000.300.0200S","price":102.0,"currency_code":"USD","in_stock":true},{"title":"10\" \/ 250lb\/in.","offer_id":56646181650598,"sku":"EIB1000.300.0250S","price":102.0,"currency_code":"USD","in_stock":true},{"title":"10\" \/ 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350lb\/in.","offer_id":56646182142118,"sku":"EIB1200.300.0350S","price":109.0,"currency_code":"USD","in_stock":true},{"title":"12\" \/ 400lb\/in.","offer_id":56646182174886,"sku":"EIB1200.300.0400S","price":109.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 100lb\/in.","offer_id":56646182207654,"sku":"EIB1400.300.0100S","price":115.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 125lb\/in.","offer_id":56646182240422,"sku":"EIB1400.300.0125S","price":115.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 150lb\/in.","offer_id":56646182273190,"sku":"EIB1400.300.0150S","price":115.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 175lb\/in.","offer_id":56646182305958,"sku":"EIB1400.300.0175S","price":115.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 200lb\/in.","offer_id":56646182338726,"sku":"EIB1400.300.0200S","price":115.0,"currency_code":"USD","in_stock":true},{"title":"14\" \/ 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175lb\/in.","offer_id":56646182830246,"sku":"EIB1600.300.0175S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 200lb\/in.","offer_id":56646182863014,"sku":"EIB1600.300.0200S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 225lb\/in.","offer_id":56646182895782,"sku":"EIB1600.300.0225S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 250lb\/in.","offer_id":56646182928550,"sku":"EIB1600.300.0250S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 300lb\/in.","offer_id":56646182961318,"sku":"EIB1600.300.0300S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 350lb\/in.","offer_id":56646182994086,"sku":"EIB1600.300.0350S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 400lb\/in.","offer_id":56646183026854,"sku":"EIB1600.300.0400S","price":119.0,"currency_code":"USD","in_stock":true},{"title":"16\" \/ 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