Rock Krawler JT45XFP-TR 4.5 Inch X Factor Pro Aluminum Trail Runner Mid-Arm Suspension System

The Rock Krawler JT45XFP-TR is a 4.5-inch X Factor Pro Aluminum Trail Runner Mid-Arm Suspension System featuring full front and rear coilover shock configuration. This complete, bolt-in lift kit is engineered for Rubicon-trim Gladiator owners who demand maximum articulation, superior trail performance, and a refined on-road ride in a single comprehensive package.

At the heart of this system are 8 adjustable control arms machined from solid 7075 aluminum, delivering the full benefits of Rock Krawler's X-Factor platform in a lightweight, high-strength package. The X-Factor Series adjustable upper and lower control arms provide up to 95 degrees of total misalignment when paired with Pro-X Krawler Joints and Adventure Series joints, allowing precise tuning of caster and pinion angle both front and rear.

Key Features:

• 4.5-inch lift with full Trail Runner coilover configuration front and rear
• All 8 control arms constructed from solid 7075 billet aluminum
• Industry-leading X-Factor adjustable upper and lower control arms — 95 degrees of misalignment
• Maintenance-free Adventure Series joints at frame connections; PRO Krawler Joints at axle connections
• Triangulated 4-link rear assembly centers the rear axle and eliminates the rear track bar
• Triple-rate front coils and quad-rate rear coils for superior on- and off-road ride quality
• Coils built with proper free-length for off-road articulation; stays firmly seated in coil bucket
• Track bar geometry correction brackets, front and rear, for proper axle centering
• Spring correction seats to reduce factory spring bow
• 14.4 inches of front axle travel; up to 15 inches of rear axle travel
• RRD 2.625-inch Remote Reservoir Racing Coilover Shocks front and rear (Stage 1)
• Shock towers and brackets included
• Bolt-in installation — no cutting or welding required

The Trail Runner configuration delivers full coilover performance at both ends of the vehicle, providing exceptional tunability for off-road enthusiasts who want to maximize articulation and shock adjustability on the trail. The triangulated rear 4-link design eliminates rear suspension bind and removes the need for a rear track bar, smoothing the highway ride while dramatically improving trail capability. All hardware and detailed installation instructions are included.