{"product_id":"eibach-ers-platinum-18-in-rear-racing-spring-3-50-in-outside-diameter-100-lb-in-rate-p1800-350-0100","title":"Eibach ERS Platinum 18 in. Rear Racing Spring, 3.50 in. Outside Diameter, 100 lb\/in. Rate - P1800.350.0100","description":"Eibach PLATINUM series race springs are engineered using our proprietary ultra-high tensile strength steel, for the lowest physical weights and maximum spring travel.\nMore Travel \/ Deflection than Standard Racing Coil Springs\n\u003cul\u003e\n  \u003cli\u003eThe Eibach ER Platinum Springs will Maintain Their Dimensions and Rates to Incredibly Tight Tolerances, Lap after Lap, Race after Race\u003c\/li\u003e\n  \u003cli\u003eFlat-Ground End Configuration with Parallel Tolerance to +\/-1 Degree\u003c\/li\u003e\n  \u003cli\u003eUltra Light-Weight Using High Tensile Steel\u003c\/li\u003e\n  \u003cli\u003eBlock Resistant - No Loss in Spring Height!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Eibach ERS Platinum P1800.350.0100 rear racing spring is engineered for demanding motorsports applications where consistent performance, reduced weight, and extended spring travel are essential. Its proprietary ultra-high tensile strength steel construction helps deliver a lightweight racing spring with greater deflection than standard racing coil springs, supporting improved suspension control over extended track sessions.\u003c\/p\u003e\u003cp\u003eDesigned to maintain its dimensions and spring rate within exceptionally tight tolerances, this Eibach Platinum series spring delivers predictable handling lap after lap and race after race. The flat-ground end configuration provides a precise, parallel seating surface, while the block-resistant design helps prevent loss of spring height under demanding operating conditions. With a 100 lb\/in. spring rate, an 18 in. free length, and a 3.50 in. outside diameter, this rear spring is suitable for custom racing suspension setups when matched to the vehicle, damper, and suspension requirements.\u003c\/p\u003e\u003cp\u003eAs an Eibach ERS Platinum component, the P1800.350.0100 is intended for professional competition and performance-focused suspension builds. Confirm application fitment, installed height, available travel, and spring rate requirements before installation. This product is sold individually and is not identified as emissions-certified for street use. California Proposition 65 warning requirements may apply.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Eibach\u003c\/li\u003e\n\u003cli\u003eSeries: ERS Platinum\u003c\/li\u003e\n\u003cli\u003ePart Number: P1800.350.0100\u003c\/li\u003e\n\u003cli\u003eApplication: Rear racing suspension spring\u003c\/li\u003e\n\u003cli\u003eSpring Rate: 100 lb\/in.\u003c\/li\u003e\n\u003cli\u003eFree Length: 18 in.\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 3.50 in.\u003c\/li\u003e\n\u003cli\u003eConstruction: Ultra-high tensile strength steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eOne Eibach ERS Platinum rear racing spring.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncreased Travel: Provides more deflection than standard racing coil springs for improved suspension compliance and control.\u003c\/li\u003e\n\u003cli\u003eConsistent Spring Rate: Maintains dimensions and rates within tight tolerances for predictable performance during repeated race use.\u003c\/li\u003e\n\u003cli\u003eLightweight Construction: Uses proprietary ultra-high tensile strength steel to reduce physical weight.\u003c\/li\u003e\n\u003cli\u003eBlock Resistant: Helps retain spring height and performance under demanding compression cycles.\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\u003eCarb Acknowledgement Required: 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\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":67580127412476,"sku":"P1800.350.0100","price":180.03,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/5917fd7feda71902acb4990da97802e8L_c4d47ef7-858b-4896-b9f2-a0db99f5d0e2.jpg?v=1790396052","url":"https:\/\/diycustoms.store\/products\/eibach-ers-platinum-18-in-rear-racing-spring-3-50-in-outside-diameter-100-lb-in-rate-p1800-350-0100","provider":"diycustoms.store","version":"1.0","type":"link"}