The Rock Krawler JK 4.5 Adventure Series Long Arm System offers best in class ride quality and handling for street use while improving off-road ability. The front and rear suspension is a full 4 link that's plug and play with all OEM axle side mounts for simple installation. All lower control arms feature our proven high clearance design to improve off-road ability. The Adventure Series Long Arm Systems are well tuned for your JK Wrangler and all the hard parts are backed by our abuse proof lifetime warranty!
Excellent Highway Ride
Improved Off-Road Ability
High Steer Upgrade
Full High Clearance Design
Full 4 Link with Track Bars Front and Rear attach to Stock Axle Mounting Points
Weld on Long Arm Mounting Brackets with Weld Scheduling just like OEM
Heat Shield thermal barrier products, just like OEM to protect the front control arm joints at the frame
Bolt On Design to the Stock Axle Mounting Pick Up Points
Sway Bar Disconnects
(2) Front frame side weld-on long arm mount
(1) Front axle side weld-on track bar bracket
(1) Pro series drag link
(1) 1/4” thick laser cut steel cross member
(2) High clearance adjustable front lower long arm
(2) Front adjustable upper long arm
(1) Front adjustable anti-wobble track bar
(2) Front triple rate spring
(1) Adjustable sway bar disconnect kit
(2) Front extended brake lines
(2) Rear frame side weld-on long arm mount
(2) High clearance adjustable rear lower long arm
(2) Rear adjustable upper long arm
(1) Rear adjustable anti-wobble track bar
(2) Rear adjustable sway bar link
(1) Bolt-on rear track bar bracket
(2) Rear triple rate spring
(2) Rear extended brake line
*Hardware & instructions
*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.
*Requires removal of the OEM frame side front and rear lower control arm mounts.
*Requires removal of the OEM frame side front and rear upper control arm mounts.
*Requires welding of the front and rear frame side long arm mounts.
*Minor exhaust rerouting required before the collector on the driver's side. This is recommended to be done prior to the suspension system being installed.
*Requires removal of the OEM rear axle side brackets.
*Requires welding of the provided rear axle side control arm/shock/sway bar link bracket, track bar bracket and rear axle truss.
*Requires removal of the OEM frame side rear shock mount.
*Requires welding of the provided frame side rear shock mount.
*Rear shocks will require a standard bushing and sleeve just like the rear lower shock bushing and sleeve. We have removed the weakness of the bar pin setup with the supplied rear upper shock mounts.
*Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up.
*This system allows the rear axle to be pushed back up to 1” over stock which perfectly centers the rear axle assembly under typical aftermarket flat fenders. It also allows for larger tires without contacting the rock sliders or rear pinch seam.
*The rear upper third link is designed around standard low pinion rear axles. When ordering for high pinion rear axles please contact us directly so we can ensure proper fitment as best as possible.
*We typically recommend 4.5” of back spacing on rims for 33” and 35” tall tires.
*We typically recommend 3.5” of back spacing on rims for 37/38” tall tires.