{"product_id":"jks-jspec137kns","title":"JKS J-Kontrol 2.5\" Lift Kit w\/ Shock Extensions | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door","description":"\u003ch2\u003eJKS J-Kontrol 2.5\" Lift Kit w\/ Shock Extensions | 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 already have quality shocks on your stock-weight JL 4-Door Unlimited and you want the J-Kontrol geometry upgrade at 2.5\" of lift without replacing them. The JSPEC137KNS delivers the full J-Kontrol 2.5\" standard-rate system with shock extension brackets, allowing you to retain and reuse your existing shock absorbers. Standard-rate coils maximize droop travel and trail compliance for stock-weight builds. This is the bring-your-own-shocks configuration of the J-Kontrol 2.5\" standard-rate lineup.\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. Shock extension brackets adapt your existing shocks to the new lift geometry without requiring replacement. Adjustable control arms allow precise alignment post-install.\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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock Note:\u003c\/strong\u003e Shock extensions are designed to work with specific shock eye-to-eye lengths — confirm your existing shock compatibility with OFAS before ordering.\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: Extension Brackets (customer-supplied shocks)\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: JSPEC137KNS\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. Verify existing shock eye-to-eye length and body diameter compatibility with JKS extension brackets before install. Standard-rate coils allow more droop travel than HD coils — confirm your existing shock has sufficient extended length to avoid topping out at full droop. No cutting or welding required for standard JL 4-Door gas applications.\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\u003eCarrying over factory JL Rubicon shocks or a set of Bilstein 5100s into this J-Kontrol 2.5\" standard-rate build on a stock-weight JL 4-Door — will the extension brackets maintain correct droop travel at full articulation with standard-rate coils? Standard-rate coils allow more droop than HD coils, which means the shock needs a longer extended length to avoid topping out at full droop. A shock that works fine at stock ride height may run out of travel at 2.5\" with std-rate springs. Send OFAS your shock model and current eye-to-eye measurement before ordering and we'll confirm whether the extension brackets give you the correct travel range for your specific JL 4-Door build.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"JKS Manufacturing","offers":[{"title":"Default Title","offer_id":51444635042113,"sku":"JSPEC137KNS","price":1285.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/JSPEC137KNS_0-BKWD.jpg?v=1772726153","url":"https:\/\/obsidianforgedautosupply.com\/products\/jks-jspec137kns","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}