{"product_id":"eibach-ers-4-00-in-length-x-2-00-in-id-coil-over-spring-350-lb-in-rate","title":"Eibach ERS 4.00 in. Length x 2.00 in. ID Coil-Over Spring, 350 lb\/in Rate","description":"Eibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry.\n\u003cp\u003eThe Eibach ERS Coil-Over Spring is a precision-engineered race spring designed for motorsports, performance suspension systems, and demanding coil-over applications. Built as part of Eibach’s renowned ERS line, this spring delivers consistent, repeatable performance with a 350 lb\/in spring rate for controlled suspension response and predictable vehicle handling.\u003c\/p\u003e\u003cp\u003eEibach manufactures ERS springs in series production using proven processes and extensive spring-making expertise. This approach helps maintain a highly linear spring characteristic, tight production tolerances, and dependable quality from spring to spring. The result is a performance component suitable for suspension tuning where accurate spring rates and consistent behavior are essential.\u003c\/p\u003e\u003cp\u003eDesigned for compatible coil-over systems, the Eibach ERS spring features a 4.00-inch free length and a 2.00-inch inside diameter. Its compact race-oriented format makes it well suited for custom suspension setups and applications requiring precise ride-height and handling adjustments. Verify suspension compatibility, available travel, and required spring rate before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e One Eibach ERS coil-over spring. Spring hardware, adjusters, seats, and other installation components are not included unless specified by the vehicle or suspension system manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Universal motorsports and custom coil-over applications when the spring dimensions and rate match the suspension system requirements. Vehicle-specific fitment data was not provided.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e350 lb\/in spring rate: Provides predictable suspension control and supports precise chassis tuning.\u003c\/li\u003e\n\u003cli\u003eLinear spring characteristic: Delivers consistent force progression for repeatable handling behavior.\u003c\/li\u003e\n\u003cli\u003eERS race spring design: Developed for motorsports and high-performance coil-over suspension systems.\u003c\/li\u003e\n\u003cli\u003eSeries production quality: Manufactured with repeatable processes, low tolerances, and consistent performance.\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: Unknown\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Eibach","offers":[{"title":"Default Title","offer_id":67581311582460,"sku":"0400.200.3500","price":109.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/c24c7ce5c049c03c6a9b0b46035ed1bd_0c9d0df0-32ab-48af-9bda-5e8c2b6d6236.jpg?v=1790406922","url":"https:\/\/diycustoms.store\/products\/eibach-ers-4-00-in-length-x-2-00-in-id-coil-over-spring-350-lb-in-rate","provider":"diycustoms.store","version":"1.0","type":"link"}