Rock Krawler JL45X2PNL-392 4.5" X-Factor X2 PRO No Limits Long-Arm Lift Kit

The Rock Krawler JL45X2PNL-392 is a 4.5-inch X-Factor X2 PRO "No Limits" Long-Arm Suspension System built specifically for hardcore off-road performance. Engineered for Wrangler JLU 392 owners who demand the absolute most from their suspension, this system delivers maximum articulation, superior geometry, and the strength to handle any terrain.

X-Factor X2 Long-Arm Architecture:

• Independent 3-Link design front and rear for maximum articulation and off-road performance
• Double adjustable front and rear upper control arms with upgraded 14mm hardware, 2-3/8" mounting width, and 1" Pro Krawler joints at each end
• Chromoly solid steel upper arms engineered to carry the full forces of the suspension
• X2 rear suspension geometry delivers adjustable anti-squat with enhanced rear instant centers and roll centers

PRO Series Billet Aluminum Lower Control Arms:

• Lower control arms are custom machined in-house from solid billet aluminum square stock
• Engineered for maximum strength and durability under the most abusive trail conditions
• "Adventure Series" maintenance-free joints at frame connections reduce grease points and provide excellent vibration absorption

"No Limits" Sway Bar Link System:

• Includes front sway bar links designed for the factory electronic sway bar disconnect found on Rubicon models
• CNC machined billet aluminum center section with Made-in-USA FK Bearing heim joints
• Factory-sized hardware for a seamless, bolt-in fit with the Rubicon E-Disconnect system

392-Specific Triple-Rate Coil Springs:

• Achieves 4.5 inches of lift over the factory 1" ride height
• Heavier spring rate engineered to support the weight of the 392 cubic inch V8 engine
• All 4 coils feature proper free-length for maximum off-road articulation while staying firmly seated in the coil bucket
• Excellent controlled response to bumps, rocks, sand, and mud — while maintaining superior on-road comfort

Geometry Correction Hardware Included:

• Correction pads to reduce factory spring bow
• Front and rear track bar geometry corrections to precisely center both axles
• Rear upper shock relocation brackets to preserve full shock and suspension travel

Installation Notes: This long-arm system requires welding of front and rear long-arm mounts, removal of OEM frame-side control arm mounts, and modification of rear shock mounts. A professional alignment by an off-road experienced specialist is strongly recommended after installation.