Overview

Rock Krawler X-Factor Pro Mid-Arm No Limits 392 Suspension Lift Kits

Rock Krawler X-Factor PRO mid‑arm No Limits 392 systems are designed for Jeep JL 392 owners who want a true bolt‑in system that delivers excellent highway manners with the durability and articulation Rock Krawler is known for. Built around service‑free Adventure Series control arm joints, these kits reduce factory suspension bind while allowing precise caster and pinion angle adjustment to restore proper geometry. Fixed lower and adjustable upper control arms (solid 7075 aluminum) provide up to 95 degrees of misalignment (paired with Pro-X Krawler and Adventure Series joints), helping the suspension move smoothly through its travel without sacrificing ride quality. Tuned triple‑rate coil springs, spring correction pads, and integrated track bar geometry corrections properly position the axles, improve rear roll center, and maintain predictable handling on and off road. Order the Rock Krawler X-Factor Pro mid‑arm No Limits 392 suspension lift kit best suited for your build.

More product features, items, and notes include:

* Available in multiple lift heights to match tire size and stance requirements; availability varies by application
* Shock options include no shocks, Bilstein shocks (B51 suffixes), or Rock Krawler RRD 2.25 in. IFP shocks (S1 suffixes)
* Components vary by lift height and shock package
* The "No Limits" kits include front sway bar links designed to retain the factory electronic sway bar disconnect function on select models
* Sway bar links feature factory‑sized hardware, billet aluminum centers, and FK bearing Heim joints (application dependent)
* Tuned triple‑rate coil springs with spring correction pads to reduce factory spring bow
* Front and rear track bar geometry corrections with improved rear roll center
* Bolt‑on rear track bar relocation bracket
* Designed as a foundation for future suspension upgrades, including long‑arm systems
* Bump stops included with shock‑equipped kits; no‑shock kits require bump stops to be purchased separately
* Tire size, wheel backspacing, and fender trimming requirements vary by build
* A 3 in. bump stop height recommended for most applications
* Rear lift height adjustments recommended for spare‑delete or heavily upfitted 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
* XR packages (where applicable) do not require a raised rear track bar bracket due to factory axle configuration
* Lift heights based on Rubicon‑equipped models with a standard accessory load (front bumper and winch, rear bumper, and full-size spare)
* The JLU 392 lift heights are above factory Jeep lifts, resulting in a ride height that is approximately one inch taller than V6 Wrangler Rubicon with the same lift height

Applications

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