Rock Krawler JL45X2PLA-4S1 4.5 Inch X Factor X2 Pro Long Arm Suspension System Stage 1

The Rock Krawler JL45X2PLA-4S1 is a 4.5-inch X Factor X2 Pro Long Arm Suspension System Stage 1 built for serious off-road performance. This complete long arm lift kit delivers class-leading articulation, corrected suspension geometry, and a dramatically improved ride whether you're on the highway or deep on the trail.

At the heart of the system is Rock Krawler's Independent 3-Link design front and rear, engineered for maximum axle articulation and off-road capability. The proprietary X2 rear suspension geometry features enhanced rear instant centers and rear roll centers with adjustable anti-squat, providing a stable and controlled ride under all conditions.

The PRO designation signifies the inclusion of Rock Krawler's signature PB&J (Pure Beef & Jealousy) billet aluminum lower control arms — custom CNC machined in-house from solid square billet stock, built to withstand extreme abuse on the most demanding terrain.

Key Features:

• 4.5-inch lift with Rock Krawler's industry-leading Triple-Rate coil springs front and rear
• Independent 3-Link long arm suspension design — front and rear — for maximum articulation
• Double adjustable front and rear upper control arms upsized to 14mm hardware with 2-3/8" mounting width and 1" Pro Krawler joints at each end
• CNC machined billet aluminum lower control arms (PB&J series) for maximum strength and durability
• Chromoly solid steel upper arms designed to handle the full forces of the suspension system
• X2 rear axle bracket system provides 4.5" of additional ground clearance under the rear axle vs. stock
• Adventure Series maintenance-free joints at frame connections — reduces grease points and provides superior vibration absorption and misalignment tolerance
• Rear upper shock relocation brackets to preserve full shock and suspension travel
• Correction pads included to eliminate factory spring bow
• Front and rear track bar geometry corrections for precise axle centering
• Stage 1 kit includes shocks for a complete, ready-to-install package

The Rock Krawler X Factor X2 Pro Long Arm system is engineered to perform equally well as a daily driver and a hardcore rock crawler. With a comprehensive Stage 1 package, this system provides an exceptional foundation for any build — street, tow, or trail.