The Rock Krawler JL 4.5 X Factor Mid Arm System was designed for those who want a complete bolt-in installation, maximum articulation from a mid-arm kit and the durability and off-road performance you expect from Rock Krawler Suspension. The X Factor Series adjustable lower control arms offer a total of 90 degrees of misalignment that eliminates the bind found in your JL's factory lowers, while high misalignment adjustable upper control arms let you precision tune your JL's caster both front and rear. Rock Krawler's industry leading triple rate coils give you 4.5 inches of lift to clear up to 40-inch tires, depending on model, and improve the on-road ride over the factory linear rate springs. All Rock Krawler JL systems include correction pads that reduce the spring bow inherent in the factory set up. The provided track bar geometry corrections, both front and rear, lets you perfectly center the axles so there is no compromise in on road handling.
System Benefits:
- Complete Bolt in System
- Excellent Highway Ride
- Improved Off-Road Ability
- Triple Rate Coil Springs
- Front & Rear Spring Leveling Pads
- Jeep remains level on all 4 corners
System Includes:
- (4) Triple rate coil springs
- (2) Front adjustable lower control arms
- (2) Front adjustable upper control arms
- (2) Front spring pads
- Adjustable front track bar
- Sway bar disconnects
- Sway bar link relocation brackets
- (2) Sway bar disconnect straps
- (2) Rear adjustable lower control arms
- (2) Rear adjustable upper control arms
- (2) Rear spring pads
- (2) Extended rear sway bar links
- Adjustable rear track bar
- Bolt-on rear track bar relocation bracket
Lift Height:
All lift heights are based on stock Rubicon models
Sahara add .393" of lift over stock configuration
Sport add .787" of lift over stock configuration
Tire Fitment:
Sport and Sahara with Full OEM Fenders37in Tall Tires (3in Bump Stop Height Recommended)
Sport and Sahara with Trimmed or High Lined OEM Fenders
38in Tall Tires (3in Bump Stop Height Recommended)
Rubicon with Full OEM Fenders
37in/38in Tall Tires (3in Bump Stop Height Recommended)
Rubicon with Trimmed or High Lined OEM Fenders
40in Tall Tires (3in Bump Stop Height Recommended)
Wheel Fitment:
Sport and Sahara Wheel Fitment Recommendations
37in/38in Tall Tires -Recommend 3.5in of Backspacing
Rubicon Fitment Recommendations
37in Tall Tires - Recommend 4.5in of Backspacing
40in Tall Tires - Recommend 3.5in of Backspacing
Shock Notes:
Generic Front Shock Length - 18-19" Collapsed/ 30" Maximum Extended
Generic Rear Shock Length -20-21" Collapsed/ 32" Maximum Extended
General Notes:
-All lift heights based on Rubicon Models
-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 side lower front and rear control arm mounts
-Requires removal of the OEM frame side front upper control arm mounts
-Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up.
RRD Spec'd Prodigy Shocks:
RRD Spec Front Shock
Part Number RRD02283
RRD Spec Rear Shock
Part Number RRD02284
*requires 3" bump stops both front and rear
RRD Spec'd TT Shocks:
RRD Spec Twin Tube Front Shock
Part Number RRD04003
RRD Spec Twin Tube Rear Shock
Part Number RRD04004
*requires 3" bump stops both front and rear
