Rock Krawler JL45X2PNL-392TR 4.5" X-Factor X2 Pro No Limits Trail Runner Long-Arm Coilover Suspension System

The Rock Krawler JL45X2PNL-392TR is a 4.5-inch X-Factor X2 Pro "No Limits" Trail Runner Long-Arm Coilover Suspension System purpose-built for hardcore rock crawling. Engineered specifically for the 392 platform, this system uses a 392-specific valving and coil spring combination in the front coilovers to deliver a balanced, functional lift height that accounts for the added weight of the massive V8 engine.

X-Factor X2 Pro Long-Arm Architecture:

• Independent 3-Link Design Front & Rear — maximizes articulation and off-road performance
• Double Adjustable Upper Control Arms — proprietary design upsizes factory hardware to 14mm with 2-3/8" mounting width and 1" Pro Krawler joints at each end
• Chromoly Solid Steel Lower Arms — engineered to carry all suspension forces under extreme conditions
• X2 Rear Suspension Geometry — provides adjustable anti-squat with enhanced rear instant center(s) and rear roll center(s)
• Adventure Series Maintenance-Free Joints — used at frame connections of lower control arms to minimize grease points and reduce maintenance
• High Clearance X2 Axle Bracket System — delivers 4.5" of rear ground clearance gain over stock
• Rear Upper Shock Relocation Brackets — preserve full shock and suspension travel

Trail Runner Coilover System:

• Front: 2-5/8" RRD Racing Coilovers with Remote Reservoirs — 13" travel yielding 14.4" of front axle travel
• Rear: 2-5/8" RRD Racing Coilovers with Remote Reservoirs — 12.5" travel yielding 13.9" of rear axle travel
• Fast CD (Compression Dampening) Adjusters — Trail Runner Stage 2 upgrade adds on-the-fly compression tuning for an even greater level of adjustability on street or trail

"No Limits" Sway Bar Links:

• Specifically designed for compatibility with the factory electronic sway bar disconnect found on Rubicon models
• CNC machined billet aluminum center section with factory-sized hardware
• Made-in-USA heim joints from FK Bearing

Additional System Features:

• Heat shields (thermal barrier) protect front control arm joints at the frame — just like OEM
• Correction pads included to reduce factory spring bow
• Track bar geometry corrections front and rear for precise axle centering and on-road handling
• Stable and controlled performance whether running stock drivetrain or high-horsepower builds

The Rock Krawler JL45X2PNL-392TR delivers the ultimate combination of long-arm geometry, coilover tunability, and 392-specific engineering — built for those who demand the most from every trail.