Rock Krawler JL25UA-392S1 2.5 Inch Ultimate Adventure Mid-Arm Suspension Lift Kit Stage 1 - 392 V8

The Rock Krawler JL25UA-392S1 2.5 Inch Ultimate Adventure Mid-Arm System Stage 1 is a complete bolt-in suspension lift kit engineered specifically for the Wrangler 392 V8 platform. Designed to deliver an easy installation experience alongside excellent on-road ride quality and the proven off-road durability Rock Krawler Suspension is known for, this system is one of the best-articulating mid-arm kits available.

The name "Ultimate Adventure System" reflects the kit's inclusion of 4 non-adjustable lower control arms and 4 fully adjustable upper control arms, all fitted with Rock Krawler's 100% service-free Adventure Series joints. These industry-leading joints provide up to 70 degrees of total misalignment — dramatically reducing the bind inherent in factory JL control arms — while the adjustable upper arms allow precise caster tuning in the front and pinion angle correction in the rear.

Key Features:

• Triple-Rate Coil Springs — 392-specific front and rear coils deliver 2.5 inches of lift with the added spring rate needed to support the heavier V8 powertrain, improving on-road comfort over OEM linear rate springs
• Service-Free Adventure Series Joints — 70 degrees of misalignment at both frame and axle connection points, virtually eliminating factory control arm bind
• 4 Non-Adjustable Lower Control Arms + 4 Fully Adjustable Upper Control Arms — precision geometry tuning for caster (front) and pinion angle (rear)
• No-Limits Front Sway Bar Links — allows Rubicon 392 owners to retain and use the factory sway bar disconnect function while achieving maximum suspension articulation
• Adjustable Extended Rear Sway Bar Links — included to complement the No-Limits front links
• Front & Rear Spring Correction Pads — minimizes the spring bow inherent in the JL factory setup for a cleaner, level install
• Front & Rear Track Bar Geometry Corrections — perfectly centers both axles to maintain proper handling with no compromise
• Stage 1 Configuration — includes all control arms, coil springs, geometry correction hardware, and sway bar links; shocks sold separately
• Manufacturer Lifetime Warranty on all hard parts

Rock Krawler's triple-rate coils provide 2.5 inches of lift with enough clearance to run up to 38-inch tires depending on model, while keeping the Wrangler comfortable and controlled on the highway. The complete geometry correction package — track bar brackets, correction pads, and precision-adjustable upper arms — ensures the axles stay properly centered for safe, predictable handling both on and off the road.