The Rock Krawler Suspension JT 4.5 inch ADVENTURE - X PRO Mid-Arm System is specifically designed for Sport, Mojave, and Overland owners who want a complete system, bolt-in installation, and some of the best articulation of any MID-ARM kit on the market. This system proves its durability and off-road performance every time you hit the streets or trail! The kit becomes the "PRO" version due to the rear Bolt-in triangulated upper control arms. The triangulated 4-link rear assembly keeps the rear axle perfectly centered, allows for the removal of the rear track bar, and eliminates rear suspension bind and the cross-talk of the front and rear track bar arrangement, therefore greatly smoothing the highway ride. The industry-leading, Adventure - X mid-Arms feature adjustable upper and lower control arms and offer 70 degrees of misalignment when paired with RK Adventure series Joints at the frame connection and the axle.
The inherent bind in a factory JL/JT control arm is greatly reduced. With so much adjustability, it allows you to precision-tune the JT's caster and pinion angle front and rear. Driving you home with the most comfortable ride possible in a Gladiator are the TRIPLE RATE front coils and QUAD RATE rear coils. All four coils work together to achieve excellent on-road comfort that we feel is better than the OEM springs. The coil is built with the proper "Free-length" for off-road articulation. It stays firmly seated in the coil bucket (if a proper length shock is installed), and overall, it is a very controlled reaction to bumps, rocks, sand, mud, and whatever else you can throw at them! All Rock Krawler JT systems include correction pads that reduce the spring bow inherent in the factory setup. The provided track bar geometry corrections up front and removal in the rear in favor of triangulation lets you perfectly center the axles, so there is no compromise on-road handling.
Benefits:
Complete bolt-in system
Excellent highway ride and handling
The best off-road ability of all Mid Arm Systems
Improved rear roll center
Tuned Triple Rate Coils
Spring Correction Seats
Vehicle lean correction
Upgradable to RK Longarm System
Abuse Proof Lifetime Warranty
Best Technical support in the industry
Jeep remains level on all four corners
Includes: (Shocks Not Included)
(4) Triple/ Rear Quad rate coil springs
(2) Front adjustable lower control arms
(2) Front adjustable upper control arms
(2) Front spring pads
(1) Adjustable front track bar
(2) GEN-II Front sway bar links
(2) Rear adjustable lower control arms
(2) Rear spring pads
(2) Adjustable rear sway bar links
(1) Bolt-on rear track bar relocation bracket
(1) Rear Bolt-on Pro-X Cradle (Welding optional)
(2) Rear triangulated upper arms.
(*DEPENDING ON SHOCK PACKAGE CHOSEN*)
Bump stops are included with all shock options (This kit does not include shocks)
IF YOU CHOOSE NO SHOCKS - BUMP STOPS CAN BE PURCHASED SEPARATELY - RKKRK07880
2.25in RRD shocks / Coilovers w/Coils / 2.625 RRD Remote Reservoir Shocks
Wheel Fitment:
Sport and Overland Wheel Fitment Recommendations
37in/38in Tall Tires - Recommend 3.5in of Back Spacing
Rubicon Fitment Recommendations
37in Tall Tires – Recommend 4.5in of Back Spacing
40in Tall Tires – Recommend 3.5in of Back Spacing
Tire Fitment:
Sport and Overland with Full OEM Fenders
37in Tall Tires (3in Bump Stop Height Recommended)
Sport and Overland with Trimmed or High-Lined OEM Fenders
38in Tall Tires (3in Bump Stop Height Recommended)
Rubicon with Full OEM Fenders
37in/38in Tall Tires (3in Bump Stop Height Recommended)
Rubicon with Trimmed or High-Lined OEM Fenders
General Notes:
All lift heights are 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 1in in coil lift height for the rear.
If building an "overland style" or heavily up-fitted build in the back, we recommend upsizing 1in in coil lift height for the rear.
We recommend a new front driveshaft if you plan to off-road routinely. (Adam's Driveshaft, Tom Woods, J.E. Reel)
Requires removal of the OEM shock mount off the frame (*If Coilover system is purchased) Requires removal of the OEM shock and spring mount off the axle (*If Coilover system is purchased) Requires welding of the new coil over the mount on the axle only (*If Coilover system is purchased)
We recommend welding the rear cradle for use with 37in tires and above.
