Rock Krawler F2XF4004 4.0in X Factor Suspension System Lift Kit

The Rock Krawler F2XF4004 4.0-Inch X-Factor Suspension System is a complete bolt-in lift system engineered to deliver superior on-road comfort and improved off-road performance. Designed as a comprehensive upgrade, this system replaces the factory radius arm geometry with a precision-engineered 4-link conversion that eliminates suspension bind and maximizes articulation for serious trail use or everyday driving.

At the heart of the system are Sport Tuned Triple Rate Front Coil Springs, custom wound to provide a smooth highway ride while maintaining the compliance needed for off-road conditions. The rear is upgraded with 2-Inch Add-A-Pack Leaf Springs that work in unison with the front coils for a balanced, engineered ride across all four corners.

Steering geometry is corrected with an Adjustable Front Track Bar constructed from 1.75-inch O.D. solid alloy steel, featuring a quick adjuster and a rebuildable/serviceable Prodigy Joint at the frame mount for long-term durability. Front Pro Sway Bar Link Assemblies are fully adjustable, serviceable, and rebuildable to preserve wheel travel and prevent sway bar bind after the lift is installed.

Kit Contents:

• (4) Fully Boxed Adjustable Telescoping 4-Link Arms — fabricated from 1/4-inch thick laser-cut steel with mounting brackets and 1-3/8-inch shank hardware
• (1) Adjustable Front Track Bar — 1.75-inch O.D. solid alloy steel with quick adjuster and rebuildable Prodigy Joint at frame
• (2) Sport Tuned Triple Rate Front Coil Springs
• (2) Adjustable, Serviceable, Rebuildable Front Pro Sway Bar Link Assemblies
• (1) 4-Link Bracket Kit
• (2) 2-Inch Add-A-Pack Rear Springs

System Benefits:

• Complete bolt-in installation — no cutting or welding required
• 4-link conversion eliminates radius arm bind for improved axle articulation
• Improves both on-highway ride quality and off-road performance
• Provides lift height for fitment of larger tires
• Rebuildable and serviceable joints for long-term maintainability

Note: Shocks are not included and must be purchased separately. Compatible shock options are available from Rock Krawler.