Rock Krawler JK45AX2LA-4 4.5 Inch Adventure X2 Long Arm Suspension Lift Kit 4-Door

The Rock Krawler JK45AX2LA-4 is a 4.5-inch Adventure X2 Long Arm Suspension Lift System engineered to deliver the ideal balance between a capable daily driver and a hardcore off-road rig. Featuring a full high-clearance 4-link long arm front suspension paired with a high-clearance independent 3-link rear long arm suspension, this system transforms on-road composure and off-road performance simultaneously.

At the heart of the Adventure X2 design is Rock Krawler's award-winning Adventure Series maintenance-free joint. Built into every control arm, these joints isolate harsh road vibrations like an OE bushing, incorporate high misalignment capability, and use a Teflon-lined inner sleeve with a free-rotating steel outer sleeve — eliminating grease points entirely and producing zero noise inside the housing over the long haul.

The proprietary X2 rear suspension geometry features enhanced rear instant centers and rear roll centers, delivering the smoothest-riding 3-link suspension geometry available. The high-clearance X2 axle bracket system adds 3.5 inches of ground clearance under the rear axle compared to stock, while rear upper shock relocation brackets ensure no shock travel is sacrificed.

System Benefits:

• Full high-clearance 4-link long arm front suspension
• High-clearance independent 3-link long arm rear suspension
• Maintenance-free Adventure Series joints — no greasing required
• 3.5-inch rear ground clearance gain via X2 axle bracket system
• Weld-on long arm mounting brackets with OEM-style weld scheduling
• Heat Shield thermal barrier protection for front control arm joints at the frame
• Adjustable rear anti-squat with X2 geometry
• Rear upper shock relocation brackets preserve full shock and suspension travel
• Rear axle can be repositioned up to 1 inch rearward over stock
• Lifetime warranty coverage

Kit Includes:

• (2) Front frame-side weld-on long arm mounts
• (1) Weld-on raised trackbar mount
• (1) Top mount Pro-X drag link
• (2) Heat Shield Products thermal barrier wraps
• (1) 1/4-inch thick laser-cut steel crossmember
• (2) Front high-clearance adjustable lower control arms
• (2) Front adjustable upper control arms
• Rear axle-side control arm, shock, and sway bar link bracket
• Rear track bar bracket and rear axle truss

Installation Notes:

• Requires removal and replacement of OEM frame-side front and rear upper and lower control arm mounts
• Requires welding of provided front and rear frame-side long arm mounts
• Requires welding of provided rear axle-side brackets and truss
• Minor exhaust rerouting required on the driver's side before the collector — recommended prior to suspension installation
• Limiting straps recommended post-installation to prevent suspension over-extension