{"product_id":"jks-jspec138kfp","title":"JKS J-Kontrol 2.5\" Lift Kit w\/ Fox 2.0 Performance | HD Coils | 2018–2026 Jeep Wrangler JL 4-Door","description":"\u003ch2\u003eJKS J-Kontrol 2.5\" Lift Kit w\/ Fox 2.0 Performance | HD Coils | 2018–2026 Jeep Wrangler JL 4-Door\u003c\/h2\u003e\n\n\u003ch3\u003eIs This for You?\u003c\/h3\u003e\n\u003cp\u003eYou're building an accessorized JL 4-Door Unlimited and you want the J-Kontrol geometry upgrade with proven Fox damping at a value-forward price point. The JSPEC138KFP pairs JKS J-Kontrol control arms with Fox 2.0 Performance Series shocks and HD coil springs. HD coils handle the weight of a steel bumper or winch without sagging, and the Fox 2.0 Performance delivers consistent, predictable damping for moderate trail use and daily driving on the accessorized JL 4-Door platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Result\u003c\/h3\u003e\n\u003cp\u003e2.5\" of lift with JKS J-Kontrol geometry correction. HD coils maintain ride height under accessory loads. Fox 2.0 Performance shocks deliver reliable, consistent damping for moderate trail use and daily driving. Adjustable control arms allow precise alignment post-install. The J-Kontrol's install simplicity is a meaningful advantage on the JL 4-Door platform compared to a full long-arm conversion.\u003c\/p\u003e\n\n\u003ch3\u003eVerified Fitment (OFAS Standard)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 2018–2026 Jeep Wrangler JL 4-Door (Unlimited) — Gas Models (2.0T, 3.6L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes NOT fit:\u003c\/strong\u003e JL 2-Door | JL EcoDiesel | JL 4xe Hybrid | JK (any year) | Gladiator JT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Note:\u003c\/strong\u003e HD Rate — engineered for accessorized JL 4-Door builds with steel bumpers or winch. Use JSPEC137KFP (Std-Rate) for stock-weight builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSystem Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLift Height: 2.5\"\u003c\/li\u003e\n\u003cli\u003eSystem: J-Kontrol\u003c\/li\u003e\n\u003cli\u003eShock: Fox 2.0 Performance Series (non-reservoir)\u003c\/li\u003e\n\u003cli\u003eCoil Rate: HD — tuned for accessorized JL 4-Door builds\u003c\/li\u003e\n\u003cli\u003eControl Arms: JKS J-Kontrol geometry-corrected control arms\u003c\/li\u003e\n\u003cli\u003eSKU: JSPEC138KFP\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Fabrication Notes\u003c\/h3\u003e\n\u003cp\u003eProfessional 4-wheel alignment required post-installation. Torque all control arm hardware to JKS specification after a 500-mile break-in. No cutting or welding required for standard JL 4-Door gas applications. For extended technical trail use with a heavy front end, consider upgrading to the Fox 2.5 Elite DSC variant (JSPEC138PES) for improved heat management and on-the-fly adjustment.\u003c\/p\u003e\n\n\u003ch3\u003eWheel \u0026amp; Tire Fitment\u003c\/h3\u003e\n\u003cp\u003eEngineered for 35\" tires on an accessorized build. Recommended backspacing: 4.5\"–4.75\" on a 17\"×9\" or 18\"×9\" wheel. At 2.5\" of lift, fender clearance with 35s is tight — confirm tire brand and tread width before finalizing wheel selection.\u003c\/p\u003e\n\n\u003ch3\u003eEngineering Question\u003c\/h3\u003e\n\u003cblockquote\u003e\u003cp\u003eRunning Fox 2.0 non-reservoir shocks with HD coils on a J-Kontrol 2.5\" JL 4-Door build with a steel bumper and winch — how does the HD coil's stiffer spring rate affect the 2.0 Performance's thermal ceiling under the accessory load compared to the same shock on a standard-rate coil build with the same accessories? The HD coil's stiffer spring rate reduces the shock's dynamic load per compression cycle compared to a softer standard-rate coil under the same accessory weight — which gives the 2.0 more thermal headroom on the HD build than it would have on a standard-rate build with the same accessories. For daily driving and moderate trail use on an accessorized JL 4-Door, the 2.0 Performance is a functional starting point. Contact OFAS when you're ready to spec the Fox 2.5 Elite upgrade and we'll confirm the right eye-to-eye length for your specific build.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"JKS Manufacturing","offers":[{"title":"Default Title","offer_id":51444633698625,"sku":"JSPEC138KFP","price":2033.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/JSPEC138KFP_0-BKWD.jpg?v=1772726130","url":"https:\/\/obsidianforgedautosupply.com\/products\/jks-jspec138kfp","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}