Rock Krawler JT45SB2NL-TR 4.5 Inch Silverback No Limits Trail Runner Long-Arm Suspension System

The Rock Krawler JT45SB2NL-TR is a 4.5-inch Silverback "No Limits" Trail Runner long-arm suspension system built for serious off-road performance. This comprehensive system unites a full high-clearance 4-link long-arm front suspension with a triangulated 4-link rear assembly, delivering maximum articulation, superior axle control, and a dramatically improved ride both on- and off-road.

The "No Limits" designation comes from the included front sway bar links, specifically engineered to work seamlessly with the factory electronic sway bar disconnect found on Rubicon models. Featuring CNC-machined billet aluminum centers and Made-in-USA FK heim joints, these links let Rubicon owners press the button and hit the rocks without sacrificing articulation.

The rear triangulated 4-link setup keeps the rear axle perfectly centered throughout the full suspension cycle, eliminates the rear track bar entirely, and removes rear suspension bind—greatly smoothing highway handling and reducing the cross-talk typically found in stock front/rear track bar arrangements.

Key Features:

• 4.5-inch lift height with full high-clearance long-arm 4-link front suspension
• Triangulated 4-link rear assembly — eliminates rear track bar and suspension bind
• "No Limits" front sway bar links compatible with factory Rubicon electronic sway bar disconnect
• CNC-machined billet aluminum sway bar link centers with Made-in-USA FK heim joints
• X Factor Series adjustable lower control arms with 90 degrees of total misalignment
• Triple-rate front coil springs for progressive, articulation-friendly performance
• Quad-rate rear coil springs maintaining standard JT rear load capacities
• Coil correction pads to reduce spring bow and optimize spring geometry
• Track bar geometry correction for precise front and rear axle centering
• Trail Runner coilover shock configuration for enhanced on-trail tunability
• Abuse Proof Lifetime Guarantee on all hard parts (control arms, track bars, mounting brackets)

The Silverback No Limits Trail Runner system is engineered for Gladiator Rubicon owners who demand the most from their suspension — whether daily driving, towing, or conquering technical rock terrain. Rock Krawler's Trail Runner designation includes Fast CD (Compression Dampening) adjusters on the coilovers, providing an advanced level of tunability to match any driving condition.