Skyjacker Suspension JL40BLTD 3.5-4" Lift Kit for Jeep Wrangler JL 4-Door Diesel

The Skyjacker JL40BLTD is a complete 3.5-4 inch lift kit specifically engineered for Jeep Wrangler JL 4-door diesel models. This comprehensive suspension system delivers enhanced ground clearance and improved off-road capability while maintaining on-road comfort and factory Electronic Stability Control (ESC) functionality.

Progressive Variable Rate Coil Springs:

At the heart of this system are Skyjacker's innovative 2-stage dual rate long travel coil springs. These progressive springs feature two distinct operating stages: a 1st Flex Rate for comfortable daily driving and enhanced articulation, and a 2nd Ride Rate that engages during compression. The flex rate stage keeps coil springs properly seated during full droop while maintaining tire contact with terrain. The rear coils are side-specific to work with the Wrangler's unique suspension geometry.

Complete Kit Includes:

• Front adjustable track bar with HD OEM-style pressed-in rubber bushing, 3/4-inch heavy-duty rod end, jam nut, and alignment bushings
• Heavy-duty rear track bar upper mount bracket for proper axle centering
• Front and rear bump stop spacers that bolt to axle bump pads for controlled suspension travel
• Extended-length front and rear sway bar end links with pressed-in HD OEM-style rubber bushings for full articulation

This lift kit is engineered to maintain proper suspension geometry, ensuring the Electronic Stability Control system continues to function within factory parameters. All components are designed to work together for optimal performance, safety, and durability on and off the road.