Rock Krawler F2XFP3504 3.5" X-Factor Pro Mid-Arm Suspension System with Billet Aluminum Arms

The Rock Krawler F2XFP3504 is a 3.5" X-Factor Pro Mid-Arm Suspension System engineered as a complete, bolt-in lift solution delivering maximum articulation and precision geometry correction. The PRO designation signifies the inclusion of signature PB+J (Pure Beef and Jealousy) lower control arms machined from solid 2" x 3" billet 7075 aluminum, while all remaining control arms are also machined from round 7075 aluminum billet stock — making this an all-aluminum arm system built to handle serious trail abuse.

Key Features:

• 3.5" lift height with mid-arm suspension geometry for optimal on- and off-road performance
• X-Factor Series adjustable upper and lower control arms providing up to 95 degrees of total misalignment when paired with Pro-X Krawler Joints and Adventure Series joints
• Maintenance-free Adventure Series joints at all frame connection points for reduced grease intervals and excellent vibration absorption
• PRO Krawler Joints at all axle connection points for maximum strength and misalignment capability
• Triple-Rate coil springs on all four corners for a progressive, comfortable on-road ride that outperforms OEM linear rate springs
• Coil springs built with proper free-length for off-road articulation, staying firmly seated in the coil bucket under all trail conditions
• Front and rear track bar geometry corrections to precisely center the axles and maintain factory-like on-road handling
• Correction pads included to reduce the spring bow inherent in the factory suspension setup
• Full adjustability for precision tuning of caster and pinion angle front and rear
• Backed by Rock Krawler's Abuse Proof Lifetime Warranty on all hard parts

The X-Factor Pro system significantly reduces the inherent bind found in factory control arms, resulting in improved articulation on the trail without sacrificing street manners. The combination of billet aluminum arms, adjustable geometry, and triple-rate coil springs makes this a comprehensive suspension upgrade for serious off-road enthusiasts.