Skyjacker D400CDKS4-X 4 In. Suspension Lift System with ADX 2.0 Remote Reservoir Shocks

The Skyjacker D400CDKS4-X is a complete 4-inch suspension lift system engineered specifically for 1987–1991 Dodge W250 and W350 Cummins Diesel pickups. This kit pairs Skyjacker's proven Softride® front and rear leaf springs with ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Shocks for a capable upgrade that delivers both on-road refinement and off-road readiness.

Skyjacker Softride® Leaf Springs:

• Individually shot-peened with hard steel pellets to increase tensile strength and maximize wheel travel
• Tapered leaf design distributes loads more evenly and creates greater flex at the leaf ends
• Teflon® wear pads between leaves and bolt-style spring clips eliminate interleaf friction and binding
• Diesel-specific engineering for maximum ride quality and long service life
• Includes leaf spring bushings, polyurethane spring eye bushings, bushing sleeves, and U-bolts

ADX 2.0 Adventure Series Remote Reservoir Shocks:

• Aluminum monotube construction with an off-road race-inspired full-displaced valving system
• External remote reservoir separates nitrogen gas from oil via an Internal Floating Piston (IFP)
• IFP prevents gas and oil from mixing or foaming (cavitation) for consistent, fade-free damping
• Application-specific valving and stroke tuned for this lift height and vehicle platform
• Engineered for higher-speed off-road performance while remaining effective at low-speed crawling

What's Included:

• Front and rear Softride® replacement leaf springs
• Leaf spring bushings and bushing sleeves
• U-bolts and mounting hardware
• ADX 2.0 Remote Reservoir Aluminum Monotube Shocks (front and rear)

Important Notes: Pitman Arm (Part # DA20) is required and sold separately. Adjustable Drag Link (Part # DL10) is required and sold separately. Models equipped with a front sway bar require Part # SBL20. Brake Line Parts # FBL60 and RBL60 are recommended.