Rock Krawler 3.5 Inch Adventure X2 Pro Elite Long Arm System - Jeep JLU 4-Door

The Adventure X2 Pro Elite is Rock Krawler's answer for the 2018 and newer Jeep Wrangler JLU (4-door) owner who wants a long arm that doesn't ask for maintenance. All four lower control arms are CNC-machined billet aluminum, and every control arm in the kit uses the Adventure Series joint, so there are no grease zerks to remember. Rock Krawler describes it as the ultimate compromise between daily driver and hard-core off-roader, and the spec sheet backs that up: full high-clearance front and rear, X2 rear geometry, and a lot of articulation. Pick your drivetrain below: Gas or Diesel.

What's in the kit

• (1) Weld-on front long arm mounting system
• (1) Heat Shield Products Sticky Shield kit (thermal barrier for the front control arm joints at the frame)
• (1) Front adjustable anti-wobble track bar
• (4) Billet 7075 lower control arms
• (4) Adjustable upper control arms
• (1) Front sway bar disconnect kit
• (4) Triple-rate coil springs
• (4) Spring correction seats
• (2) Weld-on rear frame side long arm mounts
• (1) Rear upper control arm
• (1) Rear frame side upper control arm mount
• (2) Rear extended sway bar links
• (1) Rear adjustable anti-wobble track bar
• (2) Weld-on rear upper shock mounts
• (2) Weld-on rear axle side control arm mounts
• (1) Weld-on rear track bar mount
• (1) Weld-on rear axle truss
• (2) Rear brake line relocation brackets

Shocks depend on the package you pick below. Bump stops come with every shock option; if you go with no shocks they can be ordered separately (Rock Krawler part RK07124).

Why this system

• Independent 3-link long arm rear with X2 geometry: adjustable anti-squat plus a higher rear instant center and roll center, so the Jeep stays settled on pavement and on the trail.
• The X2 axle bracket system gains 4.5 inches of clearance under the rear axle, and the rear upper shock relocation brackets keep your full shock travel.
• High-clearance long arms front and rear for articulation and rock clearance.
• Maintenance-free Adventure Series joints at the frame connections cut down grease points, soak up vibration and allow proper misalignment off-road.
• Heat Shield thermal barrier products, like OEM uses, protect the front control arm joints at the frame.
• Triple-rate coil springs with correction seats give a comfortable street ride, and the coils stay firmly seated through articulation as long as a proper-length shock is installed.
• Billet CNC-machined service-free lowers plus Adventure Series joints in every arm: a steel sleeve rotating on a Teflon-lined inner sleeve means no chafing, no grease and no noise from the joint, and the sleeve takes the clamping load so the bushing isn't crushed when you torque the arm.
• Lifetime warranty coverage.

Pick your package

• Base System (No Shocks). The kit as listed above with no shocks, for the builder who already has shocks picked out. Bump stops come with every shock option; with this one they're ordered separately.
• Bilstein 5100 Shocks. The kit plus Bilstein 5100 shocks. Rock Krawler calls them maintenance free and a great pairing with its multi-rate coil springs.
• Stage 1 (RRD 2.25 inch IFP shocks). Rock Krawler's in-house shock: a 2.25 inch hard anodized fluted aluminum body with the cooling surface of a 2.5 inch shock, a 3/4 inch hard chrome stainless steel shaft, billet aluminum valving and dual DU shaft bearings. Serviceable, rebuildable and revalveable.
• Coilover Comp System, Stage 1. Coilovers up front, coil springs and a shock in the rear: 2.625 inch RRD racing coilovers with remote reservoirs up front (12 inches of travel, about 13.3 inches of front axle travel) and matching 2.625 inch RRD racing shocks in the rear (11.5 inches of travel, about 12.8 inches of rear axle travel). Rock Krawler pitches it at owners who want coilover adjustability but still carry small loads or tow small trailers. Includes (2) triple-rate coil springs and (2) correction seats.
• Coilover Comp System, Stage 2 (Fast CD). The same Comp System layout and travel as Stage 1, with Fast CD (compression damping) adjusters on the coilovers and the rear shocks for more tuning range.
• Coilover Trail Runner, Stage 1. Coilovers at all four corners: 2.625 inch RRD racing coilovers with remote reservoirs front and rear (12 inches of front travel, 11 inches in the rear). Rock Krawler notes rear coilovers don't take changing loads as well, so heavy towing or a loaded bed isn't ideal.
• Coilover Trail Runner, Stage 2 (Fast CD). The Trail Runner layout with Fast CD (compression damping) adjusters on the coilovers for even more tuneability.

Fitment and what else you'll need

Fits the 2018 and newer Jeep Wrangler JLU (4-door): gas models with the 2.0L turbo four-cylinder, the 3.6L Pentastar V6 or the 3.6L Pentastar with eTorque; 3.0L EcoDiesel models.

Rock Krawler bases all lift heights on Rubicon models in a standard build (front bumper and winch, rear bumper and full-size spare). If you delete the spare, drop 1 inch of rear coil lift height; for an overland or heavily loaded rear build, go up 1 inch.

• Sport and Sahara: for 37 and 38 inch tall tires, Rock Krawler recommends 3.5 inches of backspacing. With full OEM fenders that means 37 inch tires; with trimmed or high-lined fenders, 38 inch tires (3 inch bump stop height recommended).
• Rubicon: 37 inch tall tires want 4.5 inches of backspacing and 40 inch tall tires want 3.5 inches. With full OEM fenders, 37 or 38 inch tires fit; with trimmed or high-lined fenders, 40 inch tires fit (3 inch bump stop height recommended).
• Requires welding of the front and rear long arm mounts.
• Requires removing the OEM frame side lower and upper front and rear control arm mounts, and the OEM axle side rear lower control arm and track bar mounts.
• Requires modifying the OEM rear shock mounts and welding on the raised rear upper shock mounts.
• Rock Krawler recommends a new front C.V. driveshaft for any front shock with a max extended length over 29 inches.
• Limiting straps are recommended once the vehicle is set up, to avoid over-extending suspension components.

Rock Krawler lists lifetime warranty coverage on this system. Posted lead times from Rock Krawler, in business days from order: mid arm kits 1 to 2 weeks, long arm kits 3 to 4 weeks, 2.25 inch shocks 1 to 2 weeks and 2.625 inch shocks or coilovers 3 to 4 weeks.