JKS J-Konnect 3.5" Lift Kit w/ J-Spec Shocks | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door

JKS J-Konnect 3.5" Lift Kit w/ J-Spec Shocks | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door

Is This for You?

You want the J-Konnect long-arm geometry on your stock-weight JL 4-Door and you're either planning to run J-Spec monotube shocks long-term or you intend to upgrade shocks later and want the lowest entry cost into the platform. The JSPEC123K is the base-shock, standard-rate coil configuration of the J-Konnect 3.5" system — the most trail-compliant, budget-accessible version of this long-arm kit for lightly built Unlimiteds.

The Result

3.5" of lift with full long-arm caster and pinion correction. Standard-rate coils maximize droop travel and trail articulation for stock-weight builds. J-Spec monotube shocks deliver a functional, predictable damping baseline that outperforms factory units. Adjustable upper and lower control arms allow precise alignment dialing. The platform is shock-upgrade-ready when you're ready to step up.

Verified Fitment (OFAS Standard)

• Fits: 2018–2026 Jeep Wrangler JL 4-Door (Unlimited) — Gas Models, Stock-Weight Configuration
• Does NOT fit: JL 2-Door | JL Diesel (EcoDiesel) | JL 4xe Hybrid | JK (2007–2018) | Gladiator JT
• Coil Note: Standard-Rate — NOT recommended for builds with steel bumpers, winch, or heavy roof rack

System Specifications

• Lift Height: 3.5"
• System: J-Konnect Long-Arm
• Shock: JKS J-Spec Monotube
• Coil Rate: Standard-Rate — optimized for stock-weight JL 4-Door builds
• Control Arms: JKS adjustable upper and lower long-arm (front and rear)
• SKU: JSPEC123K

Installation & Fabrication Notes

Long-arm geometry requires a front differential drop or relocation bracket (included or specified in kit). Professional 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 2.0, Fox 2.5, Fox 2.5 Elite) is compatible with this control arm platform — confirm eye-to-eye length with OFAS before purchasing replacement shocks.

Wheel & Tire Fitment

Optimized for 35" tires on a stock-weight build. Recommended backspacing: 4.5"–4.75" on a 17"×9" or 18"×9" wheel. Standard-rate coils are not recommended for tire sizes exceeding 37" without load confirmation.

Engineering Question

Starting with J-Spec shocks on the J-Konnect 3.5" std-rate platform and already thinking about upgrading to Fox 2.5 reservoirs later? The J-Konnect control arm geometry stays the same — but shock body diameter, reservoir clearance, and eye-to-eye length all need to be verified against your specific JL 4-Door build before swapping. Contact OFAS with your target shock model and we'll confirm fitment and any bracket requirements before you pull the trigger.