{"product_id":"eibach-ers-12-00-in-length-x-2-50-in-id-coil-over-spring-10","title":"Eibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e1200.250.0900S\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 803050289070\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eEibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring – 900 lbs\/in Rate\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eEibach ERS 1200.250.0900S\u003c\/strong\u003e is a high-performance single coil-over spring from the legendary Eibach Race Spring (ERS) series, engineered for precise suspension tuning in racing, track, or high-performance street applications. With a 12.00\" length, 2.50\" inner diameter, 900 lbs\/in linear rate, and 5.60\" of travel, this spring delivers the ideal balance of compliance and control. It provides the muscle to transfer engine power to the track through optimal tire contact, while compensating for road irregularities and minimizing body roll, squat, and dive during cornering, acceleration, and braking. Shot-peened, phosphated, and epoxy-coated for maximum durability, corrosion resistance, and longevity under extreme loads. Flat-ground ends ensure precise seating and even load distribution. Perfect for custom coil-over setups, double-spring systems (with tender\/helper), or standalone use in motorsports, drifting, autocross, or tuned street builds where tunability and performance are critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e900 lbs\/in Linear Rate Firm control for reduced body motion with excellent compliance\u003c\/li\u003e\n\u003cli\u003e12.00\" Length x 2.50\" ID Versatile sizing for most coil-over shocks and struts\u003c\/li\u003e\n\u003cli\u003e5.60\" Travel \/ 6.40\" Block Height High deflection capability with 5,041 lbs load at block\u003c\/li\u003e\n\u003cli\u003eShot-Peened \u0026amp; Epoxy-Coated Superior fatigue life, corrosion protection, and dynamic durability\u003c\/li\u003e\n\u003cli\u003eFlat-Ground Ends Precise fitment and even load distribution for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1200.250.0900S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEibach ERS (Race Springs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCustom coil-over \/ racing \/ performance suspension tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-tensile spring steel, shot-peened, phosphated, epoxy-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eSingle coil-over spring (imprinted with part no., rate, and dimensions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eDirect fit into coil-over assemblies; flat-ground ends for easy setup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eEibach Limited Lifetime Warranty (typical for ERS series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhats Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOne 1200.250.0900S Eibach ERS coil-over spring 12.00\" length, 2.50\" ID, 900 lbs\/in rate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLinear rate for predictable handling; ideal for main spring in double-spring setups\u003c\/li\u003e\n\u003cli\u003eHigh block resistance and precise tolerances for consistent performance under load\u003c\/li\u003e\n\u003cli\u003eSurface treatments (shot-peening, phosphating, epoxy) maximize longevity and fatigue resistance\u003c\/li\u003e\n\u003cli\u003eIndividual protective packaging and easy identification via imprint\u003c\/li\u003e\n\u003cli\u003ePart of Eibach's modular ERS system combine with tender\/helper springs for progressive rates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEstimated time: 30-90 minutes (depending on full suspension setup)\u003c\/li\u003e\n\u003cli\u003eDisassemble coil-over assembly, remove old spring\u003c\/li\u003e\n\u003cli\u003eInstall new ERS spring with proper perch\/seat alignment (flat-ground ends)\u003c\/li\u003e\n\u003cli\u003eReassemble, set preload\/ride height, torque to spec, and align suspension\u003c\/li\u003e\n\u003cli\u003eProfessional installation and corner balancing recommended for optimal tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eNotes\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\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eCustom coil-over applications; 2.50\" ID fits most standard coil-over shocks\/struts – verify shock compatibility and rate needs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose Eibach ERS Coil-Over Spring?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWorld-famous precision and tunability over 700 components for unlimited combinations\u003c\/li\u003e\n\u003cli\u003eHigh-performance linear rate with exceptional travel and load capacity\u003c\/li\u003e\n\u003cli\u003ePremium treatments for unmatched durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eEibach trusted leader in motorsports and performance suspension since 1980\u003c\/li\u003e\n\u003c\/ul\u003e\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 Is this spring linear or progressive? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Linear rate (900 lbs\/in) provides consistent, predictable handling throughout compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Can I use this in a double-spring setup? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, ideal as main spring, pair with Eibach tender\/helper for progressive characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How do I choose the right rate? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Depends on vehicle weight, shock valving, and desired handling consult Eibach or suspension tuner for optimal setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping and Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS \/ FedEx 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 Secure protective packaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 8-12 lbs (single high-rate spring)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Eibach","offers":[{"title":"Default Title","offer_id":44549384601679,"sku":"EIB1200.250.0900S","price":73.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/eibach_ers_spring_1200-e033-4e63-9ba5-bdf80f5516d9.jpg?v=1772735410","url":"https:\/\/www.blackopsautoworks.com\/products\/eibach-ers-12-00-in-length-x-2-50-in-id-coil-over-spring-10","provider":"Black Ops Auto Works","version":"1.0","type":"link"}