{"product_id":"eibach-ers-4-00-inch-coilover-race-spring-3-00-inch-inside-diameter-500-lb-in","title":"Eibach ERS 4.00-Inch Coilover Race Spring, 3.00-Inch Inside Diameter, 500 lb\/in","description":"Renowned for our extensive catalog of over 1,500 precision engineered race springs. Eibach race springs offer unparalled customization and performance optimization across a wide spectrum of racing applications. From shocks to pull-bars we offer a wide range of springs solutions to fine tune the handling dynamics of your race car.\nIndividual Motorsport Spring\n\u003cul\u003e\n  \u003cli\u003eEibach 3.00\" Inside Diameter Coilover Springs Available in a Full Range of Rates and Lengths\u003c\/li\u003e\n  \u003cli\u003eMaximum Travel in Combination with Smallest Block Heights\u003c\/li\u003e\n  \u003cli\u003eLegendary Eibach Off-Road Durability and Performance\u003c\/li\u003e\n  \u003cli\u003eHighest Linearity and Guaranteed Consistency\u003c\/li\u003e\n  \u003cli\u003eEach Spring Individually Tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Eibach ERS Individual Motorsport Spring is engineered for precise suspension tuning in racing and high-performance automotive applications. Part number EIB0400.300.0500S features a 3.00-inch inside diameter, a 4.00-inch free length, and a 500 lb\/in spring rate, providing a dependable foundation for optimizing handling balance, suspension response, and vehicle control.\u003c\/p\u003e\u003cp\u003eDesigned for use with compatible coilover suspension systems, this Eibach race spring delivers maximum suspension travel while maintaining a compact block height. Its precision-manufactured construction supports high linearity and consistent performance across demanding track conditions. Each spring is individually tested to help ensure reliable rate accuracy and repeatable handling characteristics.\u003c\/p\u003e\u003cp\u003eEibach is recognized for durable motorsport suspension components engineered for demanding environments. This individual spring is suitable for custom race-car suspension setups where precise spring-rate selection is essential. Confirm coilover compatibility, required spring length, inside diameter, and vehicle-specific suspension requirements before installation. Fitment is application-dependent and may require additional suspension components or professional setup.\u003c\/p\u003e\u003ch3\u003eKey Product Specifications \u0026amp; Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Eibach\u003c\/li\u003e\n\u003cli\u003ePart Number: EIB0400.300.0500S\u003c\/li\u003e\n\u003cli\u003eProduct Type: Individual Motorsport Coilover Spring\u003c\/li\u003e\n\u003cli\u003eSpring Rate: 500 lb\/in\u003c\/li\u003e\n\u003cli\u003eInside Diameter: 3.00 inches\u003c\/li\u003e\n\u003cli\u003eFree Length: 4.00 inches\u003c\/li\u003e\n\u003cli\u003eApplication: Racing and high-performance automotive suspension systems\u003c\/li\u003e\n\u003cli\u003eConstruction: Precision-engineered, individually tested spring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOne Eibach ERS Individual Motorsport Coilover Spring\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Universal motorsport-style application for compatible 3.00-inch inside-diameter coilover systems. Vehicle-specific fitment data was not provided; verify suspension compatibility and setup requirements before purchase.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3.00-inch inside diameter supports compatibility with select motorsport coilover suspension systems.\u003c\/li\u003e\n\u003cli\u003e500 lb\/in spring rate enables precise suspension tuning for racing and performance applications.\u003c\/li\u003e\n\u003cli\u003eCompact 4.00-inch free length helps maximize available suspension travel while minimizing block height.\u003c\/li\u003e\n\u003cli\u003eIndividually tested Eibach construction delivers high linearity, consistent spring-rate performance, and proven off-road durability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Eibach","offers":[{"title":"Default Title","offer_id":67581710434556,"sku":"0400.300.0500S","price":120.24,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/b7e7628b-68e4-47ad-b7e1-639325380b54-800_696284e5-e37f-484d-9445-6080c7db8fd8.jpg?v=1790409123","url":"https:\/\/diycustoms.store\/products\/eibach-ers-4-00-inch-coilover-race-spring-3-00-inch-inside-diameter-500-lb-in","provider":"diycustoms.store","version":"1.0","type":"link"}