ROCK KRAWLER 4.5IN X FACTOR SUSPENSION SYSTEM

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" of lift to clear up to 40" 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 Lifetime Warranty on All Hard Parts Upgradeable to Rock Krawler JL Long Arm Jeep remains level on all 4 corners 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 Fenders  37" Tall Tires (3" Bump Stop Height Recommended) Sport and Sahara with Trimmed or High Lined OEM Fenders 38" Tall Tires (3" Bump Stop Height Recommended) Rubicon with Full OEM Fenders 37"/38" Tall Tires (3" Bump Stop Height Recommended) Rubicon with Trimmed or High Lined OEM Fenders 40" Tall Tires (3" Bump Stop Height Recommended) Wheel Fitment: Sport and Sahara Wheel Fitment Recommendations 37"/38" Tall Tires - Recommend 3.5" of Backspacing Rubicon Fitment Recommendations 37" Tall Tires – Recommend 4.5" of Backspacing 40" Tall Tires – Recommend 3.5" of Backspacing General Notes: *All lift heights based on Rubicon models for standard style build (i.e., front bumper and winch, rear bumper and full-size spare). *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. *Recommend a new front C.V. driveshaft for all front shocks with max. extended length greater than 29" *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. *Requires 3" bump stops both front and rear