Overview

Rock Krawler X-Factor Mid-Arm No Limits 4XE Suspension Lift Kits

Rock Krawler engineers their X-Factor mid-arm No Limits 4XE suspension systems for Jeep JLU 4XE owners who want a complete bolt-in system with aggressive articulation and trail-ready durability without giving up confident street manners. Built around their X-Factor adjustable upper and lower control arms, these kits dramatically reduce factory arm bind and provide extensive adjustment so you can dial in caster and pinion angle front and rear. The control arms use Rock Krawler joint packages (Adventure Series at the frame; PRO Krawler at the axle) and deliver up to 95 degrees of misalignment when paired with these combinations, helping the Jeep flex smoothly over obstacles. Each system includes their triple-rate coil springs tuned for ride quality and controlled off-road response, along with spring correction pads to reduce factory spring bow. Front and rear track-bar geometry corrections are built in to help center the axles and maintain stable on-road handling. Get a lift system designed to flex hard on the trail, then track straight on the drive home when you order the Rock Krawler X-Factor mid-arm No Limits 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
* The "No Limits" designation comes from the included front sway bar links designed to retain the factory electronic sway bar disconnect function on specific models
* No Limits sway bar links use factory-sized hardware, a CNC-machined billet aluminum center section, and FK bearing Heim joints
* Improved rear roll center, spring correction seats, vehicle lean correction, and adjustable front/rear track bars
* 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 if you plan to off-road routinely
* 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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