JKS J-Konnect 3.5" Lift Kit w/ Fox 2.5 | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door

JKS J-Konnect 3.5" Lift Kit w/ Fox 2.5 | Standard-Rate Coils | 2018–2026 Jeep Wrangler JL 4-Door

Is This for You?

You're running a lightly loaded JL 4-Door Unlimited — no heavy bumpers, no winch, no oversized spare — and you want the J-Konnect long-arm platform with a coil rate tuned for stock-weight builds. The JSPEC123PS pairs JKS's proven long-arm geometry with Fox 2.5 Performance Series reservoir shocks and standard-rate coil springs. The result is a more compliant, trail-articulating ride for rigs that aren't carrying significant front-end weight.

The Result

3.5" of lift with long-arm caster and pinion correction. Standard-rate coils allow greater suspension travel and a softer initial spring feel compared to HD coils — ideal for stock-weight JL 4-Doors running 35s without heavy accessories. Fox 2.5 reservoir shocks provide superior heat dissipation and damping consistency on extended trail runs. Adjustable control arms dial in alignment precisely post-install.

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: Fox 2.5 Performance Series w/ Reservoir
• 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: JSPEC123PS

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. If adding a steel bumper or winch after install, consult JKS for HD coil upgrade compatibility.

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 may exhibit additional sag under heavy tire loads exceeding 37" — confirm with OFAS if running larger rubber.

Engineering Question

Debating standard-rate vs. HD coils for your JL 4-Door J-Konnect 3.5" build? If your rig is stock-weight with 35s, standard-rate is the right call for trail compliance. Add a steel front bumper or winch and the math changes. Tell OFAS your exact build spec and we'll confirm which coil rate keeps your ride height and droop travel where they need to be.