{"product_id":"eibach-ers-300mm-length-x-70mm-id-coil-over-spring","title":"Eibach ERS 300mm Length x 70mm ID Coil-Over Spring","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e300-70-0040\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 803050342652\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eEibach ERS 300mm Length x 70mm ID Coil-Over Spring - 4kg\/mm Rate\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Eibach ERS 300mm Length x 70mm ID Coil-Over Spring is a high-performance racing spring designed for custom coilover assemblies on street, track, and drift vehicles. With a 4kg\/mm spring rate, it delivers firm response and consistent ride heights across various motorsport applications. Engineered for endurance, this spring ensures reliable performance under demanding conditions.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300mm Free Length:\u003c\/strong\u003e Provides ample travel and precise ride height adjustment in most coilover struts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70mm Inner Diameter:\u003c\/strong\u003e Direct fit for standard coilover perches and bodies used in popular aftermarket kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4kg\/mm Spring Rate:\u003c\/strong\u003e Balances stiffness for sharp cornering and compliance over bumps, ideal for autocross to circuit racing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome Silicon Steel:\u003c\/strong\u003e High-tensile material resists fatigue, with shot-peening for extended lifespan under high loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquared and Ground Ends:\u003c\/strong\u003e Ensures flush seating on perches for even load distribution and easy installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInspect spring seating upon installation to confirm proper orientation.\u003c\/li\u003e\n\u003cli\u003eAvoid repeated full compressions during break-in to preserve longevity.\u003c\/li\u003e\n\u003cli\u003ePackaged in protective sleeve to prevent damage during transit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eRequires 70mm ID-compatible coilover perch and top hat assembly.\u003c\/li\u003e\n\u003cli\u003eUse threadlocker on adjuster threads; torque to manufacturer specs for perch hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eCustom Coilover Kits\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Eibach?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMotorsport-proven design trusted in global racing series.\u003c\/li\u003e\n\u003cli\u003eTight manufacturing tolerances for repeatable performance.\u003c\/li\u003e\n\u003cli\u003eComputer-controlled winding process for exact specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Does this spring fit specific vehicles?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Universal application for any coilover system with 70mm ID perches, including custom builds on Honda Civic, Subaru WRX, BMW 3-Series, and similar performance cars.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material and finish does it have?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Made from chrome silicon steel alloy, shot-peened, preset, and dual-tempered with color-coded paint for rate identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and installation info?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by Eibach's 1-year warranty against manufacturing defects; professional alignment advised post-install for optimal tire wear and handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Standard Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective cardboard sleeve, box dimensions 12\" x 3\" x 3\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.85 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Eibach","offers":[{"title":"Default Title","offer_id":40490376200271,"sku":"EIB300-70-0040","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/eibach-ers-300mm-length-x-70mm-id-coil-over-spring-eibach.jpg?v=1766041530","url":"https:\/\/www.blackopsautoworks.com\/products\/eibach-ers-300mm-length-x-70mm-id-coil-over-spring","provider":"Black Ops Auto Works","version":"1.0","type":"link"}