Skyjacker Suspension JK40BLT 4 Inch Dual Rate Long Travel Coil Spring Lift Kit

The Skyjacker JK40BLT is a comprehensive 4-inch suspension lift component box engineered specifically for serious off-road performance. This complete system features Skyjacker's innovative dual rate long travel coil springs with progressive 2-stage technology designed to optimize both comfort and capability on the trail.

Dual Rate Long Travel Coil Spring Technology:

• Flex Rate Stage: Delivers comfortable on-road ride quality while allowing the suspension to fully articulate and extend during droop, keeping coil springs properly seated and tires in contact with terrain
• Ride Rate Stage: Engages after compression past the Flex Rate for controlled handling under load and compression

ADX 2.0 Adventure Series Remote Reservoir Shocks:

• Aluminum monotube construction with race-inspired full-displaced valving system
• External remote reservoir with Internal Floating Piston (IFP) separates nitrogen gas from oil to prevent cavitation and foaming
• Engineered for high-speed off-road performance while maintaining excellent low-speed crawling capability
• Optimizes tire contact with terrain for maximum traction and control

Complete Component Package Includes:

• Front adjustable track bar with heavy-duty OEM-style rubber bushing, 3/4-inch HD rod end, jam nut, and alignment bushings
• Front and rear bump stop spacers to safely limit suspension travel
• Rear extended-length sway bar end links for full articulation at droop
• Rear track bar lower axle mount bracket to correct track bar angle
• Dana 44 rear track bar mount brace to strengthen factory mount and prevent failure
• Eccentric alignment cam bolts for correcting caster and pinion angles (front lower axle and rear upper front)
• All necessary bushings and high-grade mounting hardware

This system delivers improved handling with reduced body roll and sway while providing the articulation and wheel travel needed for challenging off-road terrain. The integrated design ensures all components work together for optimal suspension geometry and performance.