Skyjacker D400S Softride Front Leaf Spring 1961-1993 Dodge W100 W150 W200 3-4in For Sale - New and Used

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Part Brand: Skyjacker

Part Number: D400S

Vehicle Fitment

• 1961–1993 Dodge W100 Pickup (4WD, 1/2-Ton) — Front, 3–4 in. Lift
• 1972–1993 Dodge W150 Pickup (4WD, 1/2-Ton) — Front, 3–4 in. Lift
• 1961–1993 Dodge W200 Pickup (4WD, 3/4-Ton) — Front, 3–4 in. Lift
• 1972–1993 Dodge W250 Pickup (4WD, 3/4-Ton) — Front, 3–4 in. Lift
• 1974–1993 Dodge Ramcharger (4WD) — Front, 3–4 in. Lift
• 1974–1981 Plymouth Trailduster (4WD) — Front, 3–4 in. Lift

Fitment Notes

• Fits front leaf spring position only; designed for 3–4 in. of front suspension lift on the Dodge W-Series solid front axle platform spanning 1961–1993
• Sold individually — one spring per package; purchase two (2) for a complete front axle pair
• Spring bushing kit SE12D is required and sold separately — it is not included with the spring; SE12D fits 1961–1993 Dodge Pickup 1/2-Ton, 3/4-Ton, and 1-Ton, Ramcharger, and Plymouth Trailduster (4WD)
• 4WD fitment only across all supported models — this spring is not designed for 2WD (D-Series) Dodge trucks
• The Ramcharger and Plymouth Trailduster share the same front axle and spring perch geometry as the W-Series pickups of their respective years
• The W100 designation was used through 1980; the W150 designation succeeded it for 1/2-ton capacity beginning in 1972 (overlap period); both share the same spring
• Similarly, the W200 (3/4-ton) ran through the 1980s with the W250 succeeding it — all share compatible spring geometry
• For lower lift heights on the same platform, see Skyjacker D200S (2.5 in. front lift); for higher lift, see Skyjacker D600S (6 in. front lift)

Features

• Skyjacker Softride technology — leaves are tapered over their entire length, creating more flex at the leaf ends for a smoother, more compliant ride compared to conventional multi-leaf packs
• Progressive multi-leaf pack construction delivers GVW rating and load-carrying capacity equal to or greater than OEM factory springs
• Individual leaves are shot-peened with high-velocity steel pellets, compressing the steel surface to increase tensile strength and maximize wheel travel without sacrificing spring life
• Bolt-style spring clips eliminate inter-leaf friction and binding; conventional cinch-style clips that cause spring stiction are not used
• Tapered leaf design distributes load forces more evenly across a greater area, reducing the tendency of one leaf to dig into the leaf above it and extending service life
• Pre-compressed under hydraulic pressure after manufacturing to preset the arch and significantly reduce the risk of fatigue sag in service
• Baked-on powder coat finish provides durable, long-lasting protection against corrosion on- and off-road
• Manufactured from high-quality American steel for strength and long-term durability
• Vehicle-specific engineering ensures correct spring geometry, caster angle, and axle alignment are maintained at the 3–4 in. lift height on the Dodge W-Series platform
• Backed by Skyjacker\'s Limited Lifetime Warranty against defects in materials and workmanship

Specifications

• Part Number: D400S
• Product Type: Softride Front Leaf Spring
• Position: Front
• Lift Height: 3–4 in.
• Spring Width: 2½ in. (63.5 mm)
• Number of Leaves: 5
• Spring Free Arch: 4¾ in. (±¼ in.)
• Spring Material: High-Quality American Steel (Progressive Multi-Leaf Pack)
• Finish: Black Powder Coat
• Weight: 44 lbs. (single spring)
• Quantity: Sold Individually (1 spring per pack; 2 required for a complete pair)
• Bushings: Not included — use SE12D bushing kit (sold separately)

Included Components

• 1x Skyjacker D400S Softride Front Leaf Spring

Note: Spring bushing kit SE12D is required and sold separately. U-bolt kit availability — consult Skyjacker for the correct U-bolt kit for your specific model year and axle configuration.

Product Description

The Skyjacker D400S is a Softride Front Leaf Spring delivering 3 to 4 inches of front suspension lift for Dodge W-Series 4WD trucks and SUVs spanning the 1961–1993 production run — one of the longest-tenured platforms in Skyjacker\'s leaf spring catalog. The fitment covers the full range of Dodge solid front axle 4WD configurations sold under the W100, W150, W200, and W250 designations, as well as the Ramcharger and the Plymouth Trailduster, all of which share compatible front spring perch geometry. It is the mid-height front spring option within Skyjacker\'s D-series Softride lineup for these platforms, positioned between the D200S (2.5 in.) and the D600S (6 in.).

The D400S is built on Skyjacker\'s Softride technology: each leaf is tapered along its full length to create a progressive rate that generates more flex at the ends than a conventional constant-thickness leaf, producing a more compliant on-road ride without sacrificing the load capacity or spring rate needed for off-road durability and towing. Individual leaves are shot-peened with hard steel pellets to increase tensile strength, and bolt-style spring clips replace the friction-inducing cinch-style clips used in conventional designs. The spring is then fully pre-compressed under hydraulic pressure to preset the arch and minimize sag in service. A baked-on powder coat protects against corrosion in demanding off-road environments.

The D400S is sold as a single spring — two are required for a complete front axle installation. Spring bushing kit SE12D is required and sold separately; it is compatible with all supported Dodge and Plymouth vehicles across the full 1961–1993 range. Backed by Skyjacker\'s Limited Lifetime Warranty for the original retail purchaser.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

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• Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
• Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

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