{"product_id":"eibach-ers-300mm-racing-coilover-spring-70mm-inside-diameter","title":"Eibach ERS 300mm Racing Coilover Spring, 70mm Inside Diameter","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\u003eMaximum Travel in Combination with Smallest Block Heights\u003c\/li\u003e\n  \u003cli\u003eEibach Coilover Spring with 70mm Inside Diameter\u003c\/li\u003e\n  \u003cli\u003eHighest Linearity and Guaranteed Consistency\u003c\/li\u003e\n  \u003cli\u003eUltra-Lightweight for Reduced Unsprung Mass\u003c\/li\u003e\n  \u003cli\u003eEach Spring Individually Tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Eibach ERS 300-70-0040 Individual Motorsport Spring is engineered for race cars that require precise suspension tuning and dependable performance. As part of Eibach’s extensive catalog of more than 1,500 precision-engineered racing springs, this coilover spring helps optimize handling dynamics across a wide range of motorsport applications.\u003c\/p\u003e\u003cp\u003eDesigned with a 70mm inside diameter, the Eibach ERS spring is built to provide maximum suspension travel while maintaining minimal block height. Its linear spring characteristics deliver predictable response and consistent performance, allowing racers and suspension tuners to fine-tune vehicle behavior for specific tracks, conditions, and driving demands. The lightweight design also helps reduce unsprung mass, supporting more responsive suspension movement.\u003c\/p\u003e\u003cp\u003eEvery Eibach ERS 300-70-0040 spring is individually tested to ensure reliable quality and performance consistency. It is suitable for compatible racing coilover systems and applications requiring an individual motorsport spring. Verify spring rate, fitment, and suspension requirements before installation.\u003c\/p\u003e\u003ch3\u003eKey Product Specifications and Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Eibach\u003c\/li\u003e\n\u003cli\u003ePart Number: ERS 300-70-0040\u003c\/li\u003e\n\u003cli\u003eProduct Type: Individual motorsport coilover spring\u003c\/li\u003e\n\u003cli\u003eSpring Length: 11.81 inches\u003c\/li\u003e\n\u003cli\u003eInside Diameter: 2.76 inches\u003c\/li\u003e\n\u003cli\u003eApplication: Racing and performance suspension systems\u003c\/li\u003e\n\u003cli\u003eConstruction Benefit: Lightweight design for reduced unsprung mass\u003c\/li\u003e\n\u003cli\u003eQuality Control: Each spring individually tested\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\u003eFitment data should be verified against the vehicle, coilover assembly, spring rate requirements, and available suspension travel before installation. Professional setup is recommended for competition applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum Travel: Provides extended suspension travel while maintaining a compact block height for race-focused suspension setups.\u003c\/li\u003e\n\u003cli\u003e70mm Inside Diameter: Designed for compatible Eibach and other racing coilover applications using a 70mm spring interface.\u003c\/li\u003e\n\u003cli\u003eLinear Performance: Delivers predictable spring response and consistent handling characteristics during demanding track use.\u003c\/li\u003e\n\u003cli\u003eLightweight Construction: Helps reduce unsprung mass for improved suspension responsiveness and vehicle control.\u003c\/li\u003e\n\u003cli\u003eIndividual Testing: Each spring is tested by Eibach to support reliable quality and performance consistency.\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":51395875438844,"sku":"300-70-0040","price":125.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/9c7c2ff3607c7fd055118ddc9c3f2973L_b1b7306b-6238-4861-9360-0b32c97be445.jpg?v=1790360456","url":"https:\/\/diycustoms.store\/products\/eibach-ers-300mm-racing-coilover-spring-70mm-inside-diameter","provider":"diycustoms.store","version":"1.0","type":"link"}