Rock Krawler JT45SB2 4.5 Inch Silverback Long-Arm Lift System

The Rock Krawler JT45SB2 4.5-Inch Silverback Long-Arm Suspension System is a comprehensive lift and suspension upgrade engineered for Jeep Gladiator JT owners who demand performance on the trail without sacrificing daily drivability. This system combines a full high-clearance 4-link long-arm front suspension with a high-clearance triangulated 4-link mid-arm rear suspension for maximum articulation and control.

Silverback System Highlights:

• High-Clearance 4-Link Front: Long-arm design provides maximum articulation and eliminates the bind associated with traditional track bar setups
• Triangulated 4-Link Rear: Eliminates the rear track bar entirely, keeping the axle perfectly centered throughout the suspension cycle and greatly smoothing highway ride
• Service-Free Long Arms: Adventure Series joints require no greasing and are designed for long-term, maintenance-free performance
• Adventure-X Mid-Arms: Fully adjustable upper and lower control arms with up to 70 degrees of misalignment, allowing precision tuning of caster and pinion angle front and rear
• Triple-Rate Front Coil Springs: Engineered with proper free-length for off-road articulation while staying firmly seated in the coil bucket
• Quad-Rate Rear Coil Springs: Work in concert with the front coils to deliver on-road comfort and off-road capability while maintaining standard JT rear load capacities
• Coil Correction Pads: Included to reduce spring bow and optimize coil geometry at ride height
• Track Bar Geometry Correction: Included hardware precisely re-centers both axles after the lift
• 4.5-Inch Lift Height: Provides clearance for 35–40-inch tires

The Silverback system is available in multiple shock configurations, including no-shocks, RK 2.25-inch RRD shocks, front coilover, and front/rear Trail Runner coilover options. Note: Installation requires welding of front long-arm mounts. A new front CV driveshaft is recommended when front shocks exceed 29 inches of maximum extended length.