What does a 4 link suspension do on a Jeep JLU?
A 4 link suspension replaces the factory control arm layout with a suspension system that gives the builder more control over axle movement, suspension geometry, and drivetrain clearance. On a Jeep JLU, this becomes important once you move into coilovers, ORI struts, long travel suspension, or 1 ton axle swaps.
A properly designed 4 link setup improves articulation, suspension travel, and overall axle control while allowing the suspension to cycle more smoothly through rough terrain.
Why do builders run a double triangulated 4 link suspension?
A double triangulated 4 link uses angled upper and lower links to control side-to-side axle movement without relying on a track bar. This creates cleaner suspension packaging and improves articulation during rock crawling.
Builders often choose this setup because it provides more consistent axle control through suspension travel while eliminating the side loading created by a traditional track bar system.
Why does the factory fuel tank need to be relocated?
The factory Jeep JLU fuel tank occupies the same area needed for rear suspension links and suspension travel. Once you start building a true triangulated 4 link, the factory tank location becomes a major packaging limitation.
Relocating the fuel tank creates the space needed for proper rear link geometry, driveline clearance, and suspension movement.
Can this system be used with coilovers or ORI struts?
Yes. This system was designed around the needs of serious suspension builds using coilovers or ORI struts. The bracket placement, skid structure, and chassis layout help create the clearance required for larger shock packages and increased suspension travel.
This makes the system a solid foundation for high travel Jeep JLU builds.
Does this kit support aftermarket transfer cases?
Yes. The skid and crossmember design provide clearance for larger aftermarket transfer cases including Atlas II and Atlas IV setups commonly used in advanced rock crawling builds.
The flat belly layout also helps improve underbody clearance and reduces hang-up points on obstacles.
Can I run a front 3 link instead of a front 4 link?
Yes. This system supports either a front 3 link with track bar or a triangulated front 4 link depending on your steering setup.
Builders using mechanical steering commonly run a front 3 link with track bar. Full hydro steering setups can be configured with a triangulated front 4 link.
Is welding required to install this suspension system?
Yes. This is a fabrication-focused suspension system designed for serious Jeep JLU builds. All primary brackets weld directly to the factory frame.
Professional welding, accurate suspension setup, and proper geometry planning are strongly recommended during installation.
Does this system improve belly clearance on the Jeep JLU?
Yes. The integrated skid and crossmember system creates a much smoother underbody profile compared to the factory layout. The skid follows the contour of the drivetrain to help reduce hang-up points while improving clearance under the Jeep.
