Rock Krawler JL45AXPNL-392S1 4.5-Inch Adventure-X PRO No Limits Long Arm Suspension Lift Kit Stage 1

The Rock Krawler JL45AXPNL-392S1 is the 4.5-Inch Adventure-X PRO "No Limits" Long Arm Suspension System — Stage 1, purpose-built for the Jeep Wrangler JL 392 platform. This comprehensive long arm lift kit is engineered to deliver the ideal balance between daily-driver comfort and hard-core off-road performance.

The 392-specific Triple Rate Coil Springs are tuned with a heavier spring rate to compensate for the weight of the 392 cubic inch V8 engine, achieving a full 4.5 inches of lift over the factory 1-inch ride height for a balanced, functional result.

The "PRO" designation reflects the inclusion of four billet aluminum CNC-machined, service-free lower control arms in a long arm configuration — delivering maximum strength with zero maintenance requirements.

The "No Limits" designation comes from the inclusion of purpose-built front sway bar links that allow Rubicon owners to use the factory electronic sway bar disconnect feature without compromise. These links feature a CNC-machined billet aluminum center section and Made-in-USA FK Bearing heim joints.

Key Features:

• 4.5-inch lift height over factory 1-inch baseline (392 models)
• 392-specific Triple Rate Coil Springs tuned for the V8 engine weight
• Four CNC-machined billet aluminum service-free long arm lower control arms
• Full high clearance 4-link long arm front suspension
• High clearance independent 3-link rear long arm suspension with X2 geometry
• 4.5 inches of added ground clearance under the rear axle vs. stock
• Rear upper shock relocation brackets to preserve full shock and suspension travel
• No Limits front sway bar links compatible with factory Rubicon electronic sway bar disconnect
• CNC-machined billet aluminum sway bar link centers with Made in USA FK Bearing heim joints
• Correction pads included to reduce factory spring bow
• Front and rear track bar geometry corrections for proper axle centering

Installation Notes: This is a long arm system requiring welding of front and rear long arm mounts. Installation also requires removal of OEM frame-side lower and upper control arm mounts (front and rear), removal of OEM axle-side rear lower control arm and track bar mounts, and modification and welding of raised rear upper shock mounts. A new front CV driveshaft is recommended for front shocks with a maximum extended length greater than 29 inches. Limiting straps are recommended after final setup to prevent over-extension of suspension components.