The X-Factor X2 Flat Belly long arm upgrade for the LJ, which Rock Krawler calls the industry's only full flat belly long arm system, with every arm tucked up inside the frame. It carries over the independent 3-link front and triangulated 4-link rear that Rock Krawler pioneered, now with more double triangulation in the rear for better stability.
What's in the box
- (4) High misalignment/adjustable lower long arms
- (1) Adjustable front upper control arm
- (1) Skid plate and skid plate mounting brackets
- (2) Rear upper triangulated 4 link arms
- (1) Rear triangulated 4 link mounting cradle/axle truss
- (2) Front lower control arm axle mounts
- (2) Rear lower control arm axle mounts
Why this upgrade
- Full flat belly layout: all of the arms tuck up inside the frame.
- Independent front 3-link and double triangulated rear 4-link geometry.
- Adventure Series joints on the frame side of the lower control arms reduce maintenance; the newer Pro-X Krawler joints with one-piece BASF thermo-elastomer material give 95 degrees of misalignment or more on every control arm.
- Upgradeable to coilovers, stretch systems or Rockzilla, with an abuse proof lifetime warranty on all hard parts per Rock Krawler.
Fitment and what else you'll need
Sold for the 2004 to 2006 Jeep Wrangler Unlimited LJ (Rock Krawler lists the application as 04-06 Wrangler Unlimited LJ). Check the list above for what is and isn't in the box before you plan the rest of the build.
- Includes hardware and detailed instructions.
- Designed for OEM axles and OEM axle control arm mounting widths (Dana 30/44).
- For use with axles that will not be able to achieve OEM lower control arm mounting widths please call as it will require customized lower control arm bend profiles similar to how we do Rockzilla systems and upgrades.
- Requires a SYE with C.V. Driveshaft with long rear uppers.
- A custom cat back exhaust is required.
- Rock Krawler recommends using rear shock relocation brackets or rear shock shifters for some applications.
- Requires Artec or Motobilt HD body mounts that raise the body 1.25 inch and a small motor mount lift or 1.5 inch body lift/motor mount lift or greater.
- Remember to combine suspension lift height and body lift height or body mount replacement and your total lift height to achieve your desired overall all tire clearance.
Rock Krawler lists lifetime warranty coverage on its systems.