Rock Krawler JL45X2NL-4D 4.5 Inch X Factor X2 No Limits Long Arm Suspension Lift Kit

The Rock Krawler JL45X2NL-4D 4.5" X Factor X2 "No Limits" Long Arm Suspension System is a complete front and rear lift kit engineered for serious hard-core rock crawling on the Jeep Wrangler JL 4-Door (Unlimited). Delivering 4.5 inches of lift, this long arm system transforms the JL's suspension geometry for maximum articulation, trail dominance, and on-road stability.

The "No Limits" designation comes from the inclusion of specially designed front sway bar links that allow Rubicon owners to continue using the factory electronic sway bar disconnect feature while still achieving full articulation on the trail. The sway bar links feature a CNC machined billet aluminum center section and Made-in-USA heim joints from FK Bearing.

The "X Factor X2" system features an independent 3-link design front and rear for maximum suspension travel and off-road performance. The proprietary double-adjustable front and rear upper control arms upgrade the factory hardware to 14mm with a 2-3/8" mounting width and 1" Pro Krawler joints at each end. The upper arm itself is a solid chromoly steel construction built to carry the full forces of the suspension under extreme use.

Key Features:

• 4.5 inches of suspension lift height (based on Rubicon models)
• Independent 3-link long arm design front and rear for maximum articulation
• X2 rear suspension geometry with adjustable anti-squat, enhanced rear instant center(s), and improved rear roll center(s)
• High clearance axle mounts provide 4.5" of additional ground clearance under the rear axle versus stock
• Rear upper shock relocation brackets preserve full shock and suspension travel
• Double-adjustable upper control arms with 14mm hardware, 2-3/8" mounting width, and 1" Pro Krawler joints
• Chromoly solid steel upper control arms for maximum strength
• "Adventure Series" maintenance-free joints at frame connections on lower control arms reduce grease points and provide excellent vibration absorption
• No Limits CNC billet aluminum front sway bar links with FK Bearing Made-in-USA heim joints
• Compatible with Rubicon factory electronic sway bar disconnect

Important Installation Notes:

• Requires use of a Steersmarts XD Yeti HD Bottom Mount Drag Link for off-road use
• Requires an aftermarket front axle housing with FAD delete to weld the front upper arm mount
• Requires welding of front and rear long arm frame mounts
• Requires removal of OEM frame-side lower and upper front and rear control arm mounts
• Requires removal of OEM axle-side rear lower control arm and track bar mounts
• Requires modifying OEM rear shock mounts and welding raised rear upper shock mounts
• Recommend a new front CV driveshaft for front shocks with maximum extended length greater than 29"
• Recommend installing limiting straps after final setup to prevent over-extension of suspension components

Rock Krawler designs and manufactures all of their Jeep suspension products in the United States, refining each system through real-world testing to deliver the most comprehensive geometry, best installation value, and a rock-solid foundation for street, tow, and trail use.