{"product_id":"jks-jspec137k","title":"JKS J-Kontrol 2.5\" Lift Kit w\/ J-Spec Shocks | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door","description":"\u003ch2\u003eJKS J-Kontrol 2.5\" Lift Kit w\/ J-Spec Shocks | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door\u003c\/h2\u003e\n\n\u003ch3\u003eIs This for You?\u003c\/h3\u003e\n\u003cp\u003eYou want the J-Kontrol geometry correction on your stock-weight JL 4-Door at the lowest possible entry cost — or you're planning to run a specific aftermarket shock and want the platform without paying for a duplicate damper. The JSPEC137K delivers the complete J-Kontrol 2.5\" standard-rate system with JKS J-Spec monotube shocks. It's the base-shock, trail-compliant configuration of the J-Kontrol 2.5\" lineup for stock-weight builds that want a clean geometry upgrade without a long-arm conversion.\u003c\/p\u003e\n\n\u003ch3\u003eThe Result\u003c\/h3\u003e\n\u003cp\u003e2.5\" of lift with JKS J-Kontrol geometry correction. Standard-rate coils maximize droop travel and trail compliance for stock-weight builds. J-Spec monotube shocks provide a functional, predictable damping baseline that outperforms factory units. Adjustable control arms allow precise alignment post-install. The platform is shock-upgrade-ready when you're ready to step up to Fox 2.5 or Fox 2.5 Elite.\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), Stock-Weight Configuration\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 Standard-Rate — NOT recommended for builds with steel bumpers, winch, or heavy roof rack. Use JSPEC138K (HD coils) for accessorized 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: JKS J-Spec Monotube\u003c\/li\u003e\n\u003cli\u003eCoil Rate: Standard-Rate — optimized for stock-weight JL 4-Door builds\u003c\/li\u003e\n\u003cli\u003eControl Arms: JKS J-Kontrol geometry-corrected control arms\u003c\/li\u003e\n\u003cli\u003eSKU: JSPEC137K\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. Shock upgrade path (Fox 2.5, Fox 2.5 Elite DSC) is compatible with this control arm platform — confirm eye-to-eye length with OFAS before purchasing replacement shocks.\u003c\/p\u003e\n\n\u003ch3\u003eWheel \u0026amp; Tire Fitment\u003c\/h3\u003e\n\u003cp\u003eOptimized for 35\" tires on a stock-weight 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 workable on a stock-weight rig — 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\u003eStarting with J-Spec shocks on the J-Kontrol 2.5\" standard-rate JL 4-Door platform and planning a Fox 2.5 Elite DSC upgrade later — does the J-Kontrol's geometry correction at 2.5\" impose any unique shock eye-to-eye length requirements compared to the J-Venture 2.5\" standard-rate at the same lift height on the same JL 4-Door? Yes — the J-Kontrol and J-Venture use different control arm designs and geometry correction approaches, which means the correct shock eye-to-eye length for an upgrade shock must be verified against the J-Kontrol's specific geometry, not the J-Venture spec. Contact OFAS with your target shock model before you buy and we'll confirm the exact fitment spec for your JL 4-Door J-Kontrol 2.5\" standard-rate build.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"JKS Manufacturing","offers":[{"title":"Default Title","offer_id":51444635402561,"sku":"JSPEC137K","price":1345.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/JSPEC137K_0-BKWD.jpg?v=1772726165","url":"https:\/\/obsidianforgedautosupply.com\/products\/jks-jspec137k","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}