{"product_id":"landrum-i400-gold-series-rear-coil-spring-5-x-10-5-inch-400-lbs","title":"Landrum I400 Gold Series Rear Coil Spring, 5 x 10.5 Inch, 400 Lbs","description":"\u003cdiv style=\"font-family: 'Inter', sans-serif; border: 1px solid #1B365D; max-width: 800px; margin: 0 auto;\"\u003e\n\n\u003cdiv style=\"background-color: #1B365D; color: #FFFFFF; padding: 20px; text-align: center; border-bottom: 4px solid #C5A059;\"\u003e\n  \u003ch1 style=\"margin: 0; font-size: 28px; letter-spacing: 2px;\"\u003eMIDWEST MOTORS\u003c\/h1\u003e\n  \u003cp style=\"margin: 5px 0 0; font-size: 12px; letter-spacing: 4px; color: #C5A059;\"\u003eDRIVING THE HEARTLAND • EST. 2024\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"padding: 30px;\"\u003e\n  \u003cp style=\"margin-bottom: 20px;\"\u003eThe Landrum Springs I400 Gold Series Rear Coil Spring is a premium, dyno-tested suspension component engineered for the demanding environments of circle track and pavement racing. Constructed from high-tensile chrome silicon alloy steel, this spring provides unmatched consistency and durability for competitive performance.\u003c\/p\u003e\n\n  \u003ch3 style=\"color: #1B365D; border-left: 4px solid #C5A059; padding-left: 10px;\"\u003eKey Features\u003c\/h3\u003e\n  \u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e✦ \u003cstrong\u003eChrome Silicon Steel:\u003c\/strong\u003e Cold-wound from the highest grade material for superior fatigue resistance.\u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e✦ \u003cstrong\u003eDyno-Tested Consistency:\u003c\/strong\u003e Each spring is individually tested and includes a dyno sheet to ensure a true linear rate.\u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e✦ \u003cstrong\u003ePrecision Manufacturing:\u003c\/strong\u003e Closed and ground ends ensure squareness and optimal contact with spring seats.\u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e✦ \u003cstrong\u003eProtective Finish:\u003c\/strong\u003e Gold powder coating prevents hydrogen embrittlement and corrosion.\u003c\/li\u003e\n    \u003cli style=\"margin-bottom: 10px;\"\u003e✦ \u003cstrong\u003eHigh Travel Design:\u003c\/strong\u003e Engineered to provide maximum travel without losing free height.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color: #1B365D; margin-top: 30px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #1B365D; color: #FFFFFF; text-align: left;\"\u003e\n        \u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eDetails\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eManufacturer Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eI400\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSpring Rate\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e400 lbs\/in\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eOutside Diameter (OD)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e5.0 Inches\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eFree Height\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e10.5 Inches\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eGold Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3 style=\"color: #1B365D; margin-top: 30px;\"\u003eCompatibility\u003c\/h3\u003e\n  \u003cp\u003eUniversal fitment for various racing chassis including:\u003c\/p\u003e\n  \u003cul style=\"padding-left: 20px;\"\u003e\n    \u003cli\u003eDirt and Pavement Modifieds\u003c\/li\u003e\n    \u003cli\u003eLate Model Race Cars\u003c\/li\u003e\n    \u003cli\u003eStreet Stock \/ Hobby Stock (GM-style rear setups)\u003c\/li\u003e\n    \u003cli\u003eCustom Racing Suspensions with 5\" Spring Cups\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"color: #1B365D; margin-top: 30px;\"\u003eOEM Cross-Reference\u003c\/h3\u003e\n  \u003cul style=\"padding-left: 20px; color: #555;\"\u003e\n    \u003cli\u003eHyperco 10B0400\u003c\/li\u003e\n    \u003cli\u003eQA1 510-400\u003c\/li\u003e\n    \u003cli\u003eEibach 1050.500.0400\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color: #F4F4F4; padding: 15px; text-align: center; border-top: 1px solid #1B365D; font-size: 10px; color: #1B365D;\"\u003e\n  \u003cstrong\u003eQUALITY MIDWESTERN SERVICE • SALES | SERVICE | RESTORATION\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e The Landrum Gold Series I400 is a high-performance conventional rear coil spring designed for circle track and dirt racing applications. Engineered with high-tensile chrome silicon alloy steel, these springs are cold-wound and powder-coated to ensure durability and consistent linear rates. Each spring is dyno-tested and engraved with its unique serial number and verified rate for precise suspension tuning. 4.5","brand":"Landrum Performance Springs","offers":[{"title":"Default Title","offer_id":48625698078970,"sku":null,"price":84.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/shopmidwestmotors.com\/products\/landrum-i400-gold-series-rear-coil-spring-5-x-10-5-inch-400-lbs","provider":"Midwest Motors","version":"1.0","type":"link"}