Overview

Rock Krawler X-Factor Pro Mid-Arm 4XE Suspension Lift Kits

Rock Krawler engineers their X-Factor PRO ELITE mid-arm suspension systems as bolt-in solutions for Jeep JL 4XE applications, delivering big-travel articulation and trail-proven durability without sacrificing confident street manners. Each system is engineered around eight adjustable control arms and their high-misalignment joint combination to dramatically reduce factory bind and provide up to 95 degrees of misalignment for smooth flex. With extensive adjustability built in, you can precision-tune caster and pinion angle front and rear for stable tracking and predictable handling on the highway or the rocks. Ride quality comes from the tuned multi-rate coils paired with spring correction pads and track bar geometry corrections to help keep coils seated, reduce spring bow, and keep axles centered. Get a lift system that is designed to flex hard on the trail and track straight on the drive home when you order the Rock Krawler X-Factor Pro mid-arm 4XE suspension lift kit best suited for your application.

More product features, items, and notes include:

* Offered at multiple lift heights so you can choose the stance and tire clearance that matches your build; availability varies by application
* Choose the shock package that fits your build: no shocks, Bilstein shocks (B51 suffixes), or their in-house RRD 2.25 in. IFP shocks (S1 suffixes); availability varies by application
* Listed components vary slightly by lift height/shock package
* Signature PB+J (Pure Beef and Jealousy) mid-arms machined from billet 7075 aluminum
* High-misalignment joint combination includes maintenance-free Adventure Series joints at the frame and PRO Krawler joints at the axle
* Tuned triple-rate coil springs and spring correction seats on all four corners
* Vehicle lean correction, adjustable front track bar, and Gen II sway bar links
* Improved rear roll center, adjustable rear sway bar links, bolt-on rear track bar relocation bracket, and rear adjustable track bar
* System architecture designed to be a base for future suspension expansion, including long-arm systems, if desired
* Shock-equipped kits feature bump stops; shock-less versions require bump stops to be purchased separately
* Tire size can affect wheel backspace recommendations and require trimming of full OE-style fenders
* Bump stop height of 3 in. recommended for most builds (application dependent)
* Rear lift height adjustments recommended for spare‑delete or heavily up-fitted rear builds (typically done with one-inch taller or shorter rear coil springs)
* New front driveshaft recommended for frequent off-road use
* Welding the rear cradle for use with 37 in. and larger tires highly recommended
* All lift heights based on Rubicon models for standard style build (front bumper and winch, rear bumper, and full-size spare)

Applications

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