{"product_id":"king-shocks-3-0-inch-id-coil-spring-12-inch-length-300-lb-rate","title":"King Shocks 3.0-Inch ID Coil Spring, 12-Inch Length, 300 lb. Rate","description":"King coil springs are manufactured to our specifications in the USA using the finest quality, high tensile, chrome silicon wire available. Our springs are specifically wound for off-road applications, not repackaged car springs. Our spring rates, wire diameters, and coil lengths have been developed through extensive real world testing on all types of terrain. Our race winning designs have been put to the test in the heat of battle from Baja to Dakar. All springs have closed and ground ends to sit flat and deflect true. We have the largest selection of springs to match your application. We sell thousands of springs a month with barely a return ever, yet we offer a lifetime warranty to the original purchaser against sagging and breakage. You will have the added peace of mind knowing you're covered, just in case. In the rare occurrence that a spring does fail, it will be cheerfully replaced with no questions asked. Our customer support is second to none just like the quality and performance of our products. Nothing rides like a King.\nCoil Spring; 3.0 in.; 12 in. Length\/300 lbs. Spring Rate;\n\u003cul\u003e\n  \u003cli\u003eCoils Are Made From The Finest Quality; High Tensile; Chrome Silicon Wire Available\u003c\/li\u003e\n  \u003cli\u003eKing Coil Springs Are Manufactured To Our Specifications Right Here In The USA\u003c\/li\u003e\n  \u003cli\u003eCoils Are Closed And Ground To Sit Flat And Deflect True\u003c\/li\u003e\n  \u003cli\u003eOver 10;000 Springs In Stock And Ready To Ship\u003c\/li\u003e\n  \u003cli\u003eSpecifically Wound For Off-Road Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe King Shocks 3.0-Inch ID Coil Spring is engineered specifically for demanding off-road suspension applications. Part number kinSPR3-12-300 features a 300-pound spring rate and a 12-inch free length, providing a dependable foundation for suspension systems that require controlled support and consistent performance across varied terrain. Unlike repurposed automotive springs, King coil springs are specifically wound for off-road use and developed through extensive real-world testing.\u003c\/p\u003e\n\u003cp\u003eManufactured in the USA from high-tensile chrome silicon wire, this King Shocks coil spring is built for strength, durability, and repeatable performance. The spring uses closed and ground ends to sit flat in the suspension and deflect properly under load. Its carefully developed spring rate, wire diameter, and coil length help deliver predictable suspension response for off-road vehicles, including applications used in competitive environments ranging from Baja to Dakar.\u003c\/p\u003e\n\u003cp\u003eKing Shocks supports the original purchaser with a lifetime warranty against sagging and breakage, providing added confidence for long-term use. This coil spring is sold individually and should be selected according to the vehicle's suspension design, corner weight, travel requirements, and desired ride characteristics. Confirm application compatibility and required spring rate before installation.\u003c\/p\u003e\n\u003ch3\u003eProduct Specifications and Technical Data\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: King Shocks\u003c\/li\u003e\n  \u003cli\u003ePart Number: kinSPR3-12-300\u003c\/li\u003e\n  \u003cli\u003eProduct Type: Off-road coil spring\u003c\/li\u003e\n  \u003cli\u003eInside Diameter: 3.0 inches\u003c\/li\u003e\n  \u003cli\u003eFree Length: 12 inches\u003c\/li\u003e\n  \u003cli\u003eSpring Rate: 300 pounds per inch\u003c\/li\u003e\n  \u003cli\u003eMaterial: High-tensile chrome silicon wire\u003c\/li\u003e\n  \u003cli\u003eEnd Configuration: Closed and ground ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOne King Shocks 3.0-Inch ID coil spring\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOff-Road-Specific Design: Specifically wound for off-road suspension applications rather than adapted from passenger-car springs.\u003c\/li\u003e\n\u003cli\u003eHigh-Strength Construction: Manufactured in the USA from high-tensile chrome silicon wire for durable, consistent performance.\u003c\/li\u003e\n\u003cli\u003eFlat-Seating Ends: Closed and ground ends help the spring sit flat and deflect properly under suspension loads.\u003c\/li\u003e\n\u003cli\u003e300-Pound Spring Rate: Provides controlled suspension support for applications matched to the vehicle's weight and suspension setup.\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\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Unknown\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\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\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":"King Shocks","offers":[{"title":"Default Title","offer_id":67695265054972,"sku":"SPR3-12-300","price":147.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/e4bb0a71a79dd9cdb29988957c757e8a_2b65c17f-1f07-427a-b807-5d5635b24409.png?v=1791920468","url":"https:\/\/diycustoms.store\/products\/king-shocks-3-0-inch-id-coil-spring-12-inch-length-300-lb-rate","provider":"diycustoms.store","version":"1.0","type":"link"}