Rock Krawler 3.5 Inch Adventure Mid Arm System - 2018+ Jeep Wrangler JL 2-Door

The Adventure Mid Arm System is Rock Krawler's entry point to a real 3.5 inch lift for a 2018 and newer Jeep Wrangler JL (2-door), and it bolts in without a welder. It was designed with Sport and Sahara owners in mind: a complete kit with service-free Adventure Series joints at both ends of the front lower arms, a front arm that's longer than the factory one so you can bring the caster back, and the spring and track bar geometry corrections that keep the Jeep level and the axles centered.

What's in the kit

• (4) Triple-rate coil springs
• (2) Front set-length lower control arms
• (2) Front spring pads
• (1) Adjustable front track bar
• (2) Rear spring pads
• (2) Set-length rear sway bar links
• (1) Bolt-on rear track bar relocation bracket

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

• Complete bolt-in system, so no cutting or welding to get it on the Jeep.
• Tuned triple-rate coil springs with spring correction pads give excellent highway ride and built-in lean correction.
• Track bar geometry corrections front and rear, plus an improved rear roll center, keep the axles centered and the handling honest.
• The Jeep sits level on all four corners.
• Service-free Adventure Series joints on the front arms, 35 degrees of misalignment with Adventure joints at the frame and axle, and an arm longer than OEM so you can correct caster.
• Upgradable to a Rock Krawler long arm system down the road.
• 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.

Fitment and what else you'll need

Fits the 2018 and newer Jeep Wrangler JL (2-door): gas models with the 2.0L turbo four-cylinder, the 3.6L Pentastar V6 or the 3.6L Pentastar with eTorque.

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).
• Rock Krawler recommends a new front driveshaft if you plan to off-road routinely.

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.