{"product_id":"eibach-silver-coilover-spring-3-75in-i-d-4","title":"Eibach Silver Coilover Spring - 3.75in I.D.","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e1600.375.0350S\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 803050422507\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eEibach Silver Coilover Spring - 3.75in I.D. 1600 lb\/in 3.50in Height\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eEibach 1600.375.0350S Silver Coilover Spring from the ERS Race Spring System delivers 1600 lb\/in rate in a compact 3.75\" ID and 3.50\" free height design. It fits universal coilover strut assemblies in drag racing, autocross, road racing, and performance street applications requiring precise suspension control. Consistent linear characteristics ensure reliable performance under demanding conditions.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1600 lb\/in Spring Rate:\u003c\/strong\u003e Provides firm damping response for sharp cornering and stability at high speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.75\" Inside Diameter:\u003c\/strong\u003e Matches large strut body coilovers common in racing strut inserts and custom setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.50\" Free Length:\u003c\/strong\u003e Allows low ride heights while maintaining adequate travel in tight suspension geometries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver Finish:\u003c\/strong\u003e Identifies precise rate range with corrosion-resistant coating for extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduction Tolerances +\/-1%:\u003c\/strong\u003e Guarantees identical feel and setup repeatability across multiple springs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSpring measured at 1600 lb\/in with 0.83\" wire diameter and 4.61\" outer diameter.\u003c\/li\u003e\n\u003cli\u003eBlock height 1.10\"; maximum safe load 1200 lbs at full compression.\u003c\/li\u003e\n\u003cli\u003ePackaged in protective sleeve; inspect for shipping damage upon receipt.\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 spring compressor tool; compress evenly to avoid distortion.\u003c\/li\u003e\n\u003cli\u003eCompatible with Eibach Pro-Street coilovers, QA1, Bilstein, and similar 3.75\" ID strut housings.\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\u003e-\u003c\/td\u003e\n\u003ctd\u003eCoilover Strut Applications\u003c\/td\u003e\n\u003ctd\u003e3.75\" ID Bodies\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\u003eERS system used in professional motorsports for decades.\u003c\/li\u003e\n\u003cli\u003eSeries production ensures linear rates batch-to-batch.\u003c\/li\u003e\n\u003cli\u003eHigh-volume manufacturing refines quality control.\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 Will this fit my coilover strut?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, designed for any coilover with 3.75\" inner diameter strut tube; measure your assembly to confirm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material construction?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Premium chrome-silicon steel alloy with shot-peened finish for fatigue resistance and longevity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty coverage?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e One-year manufacturer warranty against defects in materials or workmanship.\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 UPS Ground or USPS Priority\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 Individual protective cardboard box, 5\" x 5\" x 5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Eibach","offers":[{"title":"Default Title","offer_id":42300992684111,"sku":"EIB1600.375.0350S","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/eibach-silver-coilover-spring-3_75in-i_d_-eibach_9c38f6e7.jpg?v=1766042935","url":"https:\/\/www.blackopsautoworks.com\/products\/eibach-silver-coilover-spring-3-75in-i-d-4","provider":"Black Ops Auto Works","version":"1.0","type":"link"}