Rock Krawler 4.5in X Factor X2 Long Arm Lift Kit

The Rock Krawler JL 4.5 X Factor X2 Systems is the ultimate JL Long Arm system. The X Factor systems feature 3 link set-up front & rear for maximum articulation and off-road performance. The rear suspension provides the tried and true independent 3 link conversion with X2 rear suspension geometry. New high clearance axle mounts provide 4.5” of ground clearance under the rear axle as compared to stock. Rear upper shock relocation brackets ensure you do not lose any shock travel. The combination of high clearance mounting and 3 link suspension geometry lets you dominate the trails.

System Benefits

Tire Fitment:
Sport and Sahara with Full OEM Fenders
38” Tall Tires (4” Bump Stop Height Recommended)
Sport and Sahara with Trimmed or High Lined OEM Fenders
40” Tall Tires (4” Bump Stop Height Recommended)
Rubicon with Full OEM Fenders
39/40” Tall Tires (4" Bump Stop Height Recommended)
Rubicon with Trimmed or High Lined OEM Fenders
42” Tall Tires (4” Bump Stop Height Recommended)

Wheel Fitment:
Sport and Sahara Wheel Fitment Recommendations
38” Tall Tires – Recommend 3.5” of Backspacing
Rubicon Fitment Recommendations
39” Tall Tires – Recommend 4.0” of Backspacing
42” Tall Tires – Recommend 3.5”

Generic Front Shock Length – 18–19” Collapsed/ 31” Maximum Extended
Generic Rear Shock Length – 19” Collapsed/ 32" Maximum Extended

General Notes:

*All lift heights based on Sport Models For 2 Doors

*If building with a spare delete, we recommend dropping 1” in coil lift height for the rear.

*If building an overland or heavily upfitted build in the back, we recommend upsizing 1” in coil lift height for the rear

*Requires aftermarket fuel tank or relocation of factory fuel tank.

*Requires the use of an Aftermarket Front Axle Housing with FAD Delete to Weld the Front Upper Arm Mount to.

*Recommend a new front C.V. driveshaft for all front shocks with max. extended length greater than 29in

*Requires welding of the Front and Rear Long Arm Mounts

*Requires removal of the OEM frame rear control arm mounts

*Requires removal of the OEM axle side rear lower control arm and track bar mounts

*Requires modifying the OEM rear shock mounts and welding of the raised rear upper shock mounts

*Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up