Rock Krawler's 1.5 inch Ultimate Adventure kit for the 4-door Wrangler JLU (392 HEMI) is a complete bolt-in mid-arm system with Adventure Series joints at both ends of the arms. Those joints are service-free (no grease fittings to chase) and Rock Krawler rates the mid-arms for 70 degrees of misalignment.
About this line
Ultimate Adventure is the Adventure Series-joint mid-arm line, with a stated 70 degrees of misalignment for the mid-arms.
Pick your package
- Base System (No Shocks): The complete kit with no shocks. Pick it if you already have shocks picked out; whatever you run needs to be a proper length so the coil stays seated.
- Bilstein 5100 Shocks: The kit plus a set of maintenance-free Bilstein 5100 shocks, which Rock Krawler describes as a good pairing with its multi-rate coils.
- Stage 1: The first Rock Krawler shock upgrade. On Rock Krawler's JL and JLU kit pages, Stage 1 is the in-house RRD 2.25 inch IFP shock package (two front and two rear shocks): serviceable, rebuildable and revalvable, and designed and built by Rock Krawler.
Fitment and what else you will need
- Vehicle: 2018 to present Jeep Wrangler JLU 4-door, 4WD. The listing is for the 392 HEMI.
- What to confirm: Rock Krawler does not publish a kit page for this exact version, so we have kept the specs to what the part numbers confirm. Send us the part number if you need the line-by-line contents, tire guidance or install notes before you order.