{"product_id":"eibach-ers-12-00-inch-coilover-spring-3-75-inch-inside-diameter-450-lb-in-rate-part-eib1200-375-0450s","title":"Eibach ERS 12.00-Inch Coilover Spring, 3.75-Inch Inside Diameter, 450 lb\/in Rate – Part EIB1200.375.0450S","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 3.75\" 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 12.00-Inch Coilover Spring is an individual motorsport spring engineered for precision suspension tuning in racing and high-performance automotive applications. With a 3.75-inch inside diameter and a 450 lb\/in spring rate, part EIB1200.375.0450S provides a reliable foundation for optimizing handling balance, suspension response, and vehicle control.\u003c\/p\u003e\u003cp\u003eDesigned to deliver maximum suspension travel with minimal block height, this Eibach race spring supports accurate setup changes across a wide range of racing configurations. Its linear performance and consistent behavior help drivers and suspension technicians fine-tune chassis dynamics with confidence. The spring is manufactured for demanding motorsport environments and reflects Eibach’s established focus on durability, repeatable performance, and precision engineering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct specifications and technical data\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Eibach\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EIB1200.375.0450S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Individual motorsport coilover spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Family:\u003c\/strong\u003e ERS race spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Length:\u003c\/strong\u003e 12.00 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 3.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Rate:\u003c\/strong\u003e 450 lb\/in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Racing and performance suspension systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat’s included:\u003c\/strong\u003e One Eibach ERS individual coilover spring. Verify spring length, inside diameter, rate, and suspension compatibility before installation. Vehicle-specific fitment is not provided; professional suspension setup is recommended for motorsport applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3.75-Inch Inside Diameter: Designed for compatible coilover suspension systems and available in a broad range of rates and lengths for precise setup tuning.\u003c\/li\u003e\n\u003cli\u003eMaximum Suspension Travel: Provides substantial usable travel while maintaining a compact block height for demanding race applications.\u003c\/li\u003e\n\u003cli\u003eOff-Road Durability: Built to deliver dependable performance in harsh racing and performance-driving environments.\u003c\/li\u003e\n\u003cli\u003eConsistent Linear Performance: Individually tested to support predictable spring behavior, repeatable handling, and accurate chassis tuning.\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":67579324268796,"sku":"1200.375.0450S","price":153.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/3a3fcbf25e4dcbf9017422e76b1d2295L_dd5fe38e-b521-43e2-9ccf-b76c23a2f644.jpg?v=1790386467","url":"https:\/\/diycustoms.store\/products\/eibach-ers-12-00-inch-coilover-spring-3-75-inch-inside-diameter-450-lb-in-rate-part-eib1200-375-0450s","provider":"diycustoms.store","version":"1.0","type":"link"}