{"product_id":"eibach-ers-linear-main-spring-1000-300-0400s","title":"Eibach ERS Linear Main Spring 1000.300.0400S","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 Linear Main Spring is an individually tested motorsport spring engineered for precise suspension tuning across a wide range of racing applications. As part of Eibach’s extensive line of precision-engineered race springs, this coilover spring helps optimize handling dynamics by delivering dependable, repeatable performance under demanding conditions.\u003c\/p\u003e\u003cp\u003eDesigned for use with 3.00-inch inside-diameter coilover systems, the Eibach ERS Linear Main Spring provides consistent spring behavior and maximum available travel with compact block heights. Its linear-rate design supports predictable suspension response, making it a practical choice for race teams, performance builders, and enthusiasts fine-tuning vehicle balance. The spring is built with Eibach’s motorsport-grade materials and is engineered to provide the durability required for off-road and circuit racing environments.\u003c\/p\u003e\u003cp\u003eKey specifications include a 1,000 lb\/in spring rate, a 4.00-inch free length, and a 3.00-inch inside diameter. Eibach part number 1000.300.0400S is supplied as one individual spring. The spring’s guaranteed consistency and individually tested construction help provide reliable setup changes between sessions and repeatable performance throughout competition use. Confirm suspension clearance, spring rate requirements, and vehicle application before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat’s Included:\u003c\/strong\u003e One Eibach ERS Linear Main Spring. Vehicle-specific fitment data was not provided; professional installation and compatibility verification are recommended.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpring Rate: 1,000 lb\/in linear spring rate supports precise suspension tuning and predictable handling response.\u003c\/li\u003e\n\u003cli\u003eCoilover Compatibility: Designed for coilover systems using a 3.00-inch inside diameter spring.\u003c\/li\u003e\n\u003cli\u003eMaximum Travel: Provides maximum suspension travel with compact block heights for optimized race-car packaging.\u003c\/li\u003e\n\u003cli\u003eMotorsport Durability: Eibach construction delivers dependable performance and long-term durability in demanding racing and off-road environments.\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: t\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":67579420180732,"sku":"1000.300.0400S","price":133.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/25d6bed76a290e07e259e5b48ee06a11L_e87d49c5-cf35-41cc-b39c-5d7be0216c92.jpg?v=1790388319","url":"https:\/\/diycustoms.store\/products\/eibach-ers-linear-main-spring-1000-300-0400s","provider":"diycustoms.store","version":"1.0","type":"link"}