{"product_id":"eibach-ers-4-00-in-length-x-2-00-in-id-coil-over-spring-300-lb-in-rate","title":"Eibach ERS 4.00 in. Length x 2.00 in. ID Coil-Over Spring, 300 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 engineered for professional motorsports, track vehicles, and performance suspension applications that require consistent spring behavior and precise tuning. Part number Eibach 0400.200.3000 is manufactured as part of the ERS race spring system, providing a dependable foundation for optimizing vehicle handling, ride balance, and suspension response.\u003c\/p\u003e\u003cp\u003eEibach produces ERS springs in repeated series production using extensive spring manufacturing experience and rigorous quality control. This approach helps deliver a highly linear spring rate with low production tolerances, allowing suspension builders and race teams to make predictable adjustments during setup. The spring is designed for compatible coil-over assemblies using a 4.00-inch spring length and 2.00-inch inside diameter, with a 300 lb\/in spring rate.\u003c\/p\u003e\u003cp\u003eBuilt for demanding automotive performance use, the Eibach ERS spring supports accurate suspension calibration across a wide range of racing and high-performance applications. Its consistent characteristics make it suitable for custom coil-over configurations where repeatability, quality, and reliable performance are essential. Verify spring dimensions, rate requirements, and coil-over compatibility before installation.\u003c\/p\u003e\u003ch3\u003eProduct Specifications and Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Eibach\u003c\/li\u003e\n\u003cli\u003eProduct Line: ERS Race Spring System\u003c\/li\u003e\n\u003cli\u003ePart Number: 0400.200.3000\u003c\/li\u003e\n\u003cli\u003eApplication: Automotive coil-over suspension\u003c\/li\u003e\n\u003cli\u003eSpring Type: Linear-rate coil-over spring\u003c\/li\u003e\n\u003cli\u003eSpring Length: 4.00 inches\u003c\/li\u003e\n\u003cli\u003eInside Diameter: 2.00 inches\u003c\/li\u003e\n\u003cli\u003eSpring Rate: 300 lb\/in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eOne Eibach ERS coil-over spring.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRace-Proven ERS Design: Part of Eibach’s comprehensive ERS race spring system for performance suspension tuning.\u003c\/li\u003e\n\u003cli\u003eLinear Spring Rate: Delivers predictable suspension response for accurate vehicle setup and handling adjustments.\u003c\/li\u003e\n\u003cli\u003eConsistent Manufacturing: Series production helps maintain low tolerances and repeatable spring characteristics.\u003c\/li\u003e\n\u003cli\u003ePerformance Coil-Over Application: Designed for compatible automotive coil-over systems requiring a 300 lb\/in spring rate.\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":67581258924284,"sku":"0400.200.3000","price":109.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/c24c7ce5c049c03c6a9b0b46035ed1bd_7ca5b300-9adb-4db4-8ae8-a043b2f50d82.jpg?v=1790406683","url":"https:\/\/diycustoms.store\/products\/eibach-ers-4-00-in-length-x-2-00-in-id-coil-over-spring-300-lb-in-rate","provider":"diycustoms.store","version":"1.0","type":"link"}