{"product_id":"skyjacker-2020-jeep-wrangler-jl-4in-component-box-w-dual-rate-long-travel-coil-springs","title":"Skyjacker 4in Dual Rate Long Travel Coil Springs: Jeep Wrangler JL 2020-2023 3.0L EcoDiesel","description":"\u003ch1\u003eSkyjacker Dual Rate Long Travel Coil Springs\u003c\/h1\u003e\n\u003ch2\u003e2020–2023 Jeep Wrangler JL 3.0L EcoDiesel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e JL40BLTD\u003c\/p\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Skyjacker 4-inch Dual Rate Long Travel Coil Springs are precision-engineered suspension components designed specifically for the 2020–2023 Jeep Wrangler JL equipped with the 3.0L EcoDiesel engine. These coil springs feature a progressive variable rate design that enhances both ride comfort and off-road articulation. By combining two distinct spring rates into one innovative coil, Skyjacker delivers a suspension upgrade that maintains factory-like handling while improving wheel travel and terrain contact. Ideal for Jeep enthusiasts seeking improved suspension performance without sacrificing drivability, these springs optimize the Wrangler’s unique suspension geometry for superior on- and off-road capability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003eSkyjacker’s dual rate coil springs incorporate advanced technology to balance comfort, articulation, and control. Key features include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProgressive variable rate design with two distinct stages: a 1st Flex Rate for comfortable ride and articulation, and a 2nd Ride Rate for controlled compression.\u003c\/li\u003e\n  \u003cli\u003e1st Flex Rate stage allows increased suspension droop for better tire contact during off-road articulation.\u003c\/li\u003e\n  \u003cli\u003e2nd Ride Rate stage engages after compression beyond the flex rate, providing firm support under load.\u003c\/li\u003e\n  \u003cli\u003eSide-specific rear coils engineered to match the Wrangler JL’s suspension characteristics.\u003c\/li\u003e\n  \u003cli\u003eIncludes front adjustable track bar with heavy-duty OEM style rubber bushings and adjustable rod end for precise alignment.\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty rear track bar upper mount bracket centers the axle correctly under the vehicle.\u003c\/li\u003e\n  \u003cli\u003eFront and rear bump stop spacers bolt onto axle bump pads to safely limit suspension travel.\u003c\/li\u003e\n  \u003cli\u003eExtended length sway bar end links with heavy-duty rubber bushings allow full articulation without binding.\u003c\/li\u003e\n  \u003cli\u003eDesigned to maintain proper suspension geometry and ensure Electronic Stability Control (ESC) functions within factory parameters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\n\u003cp\u003eSkyjacker’s coil springs are crafted from high-quality steel alloys engineered for durability and consistent performance under demanding conditions. The dual rate design incorporates a progressive coil spacing and variable wire diameter to achieve two distinct spring rates within a single spring. This innovative approach allows the springs to flex easily during articulation while providing firm support when compressed, preventing coil bind and maintaining ride height. The side-specific rear springs are tailored to the Wrangler JL’s suspension layout, ensuring balanced handling and optimal axle positioning. All components, including track bars and sway bar end links, feature heavy-duty pressed-in OEM style rubber bushings to reduce noise and vibration while enhancing longevity.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThese coil springs are designed as a direct replacement for the factory springs on 2020–2023 Jeep Wrangler JL models with the 3.0L EcoDiesel engine. Installation requires standard suspension disassembly and can be completed by experienced DIYers or professional technicians. The kit includes all necessary components to maintain proper suspension geometry and alignment, minimizing the need for additional modifications. The adjustable front track bar and included alignment bushings facilitate precise axle centering and tracking. Front and rear bump stop spacers and extended sway bar end links ensure safe suspension travel and articulation without compromising stability or ESC functionality.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch dual rate long travel coil springs (front and side-specific rear)\u003c\/li\u003e\n  \u003cli\u003eFront adjustable track bar with pressed-in heavy-duty OEM style rubber bushings\u003c\/li\u003e\n  \u003cli\u003eAdjustable 3\/4-inch heavy-duty rod end, jam nut, and alignment bushings for track bar\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty rear track bar upper mount bracket\u003c\/li\u003e\n  \u003cli\u003eFront and rear bump stop spacers\u003c\/li\u003e\n  \u003cli\u003eFront and rear extended length sway bar end links with pressed-in heavy-duty rubber bushings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cp\u003eThis Skyjacker coil spring kit is ideal for Jeep Wrangler JL owners who want to enhance their vehicle’s off-road articulation and suspension travel while maintaining a comfortable on-road ride. It suits enthusiasts who demand reliable, durable suspension components that improve terrain contact and axle control without sacrificing factory safety features like Electronic Stability Control. Whether tackling rugged trails or daily driving, these springs provide a balanced upgrade for 3.0L EcoDiesel Wrangler JL models.\u003c\/p\u003e","brand":"Skyjacker","offers":[{"title":"Default Title","offer_id":48209065443540,"sku":"JL40BLTD","price":706.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/c452dfae71373718e49ccf6d15784b91.jpg?v=1783234937","url":"https:\/\/fasthemis.com\/products\/skyjacker-2020-jeep-wrangler-jl-4in-component-box-w-dual-rate-long-travel-coil-springs","provider":"FastHemis","version":"1.0","type":"link"}