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Home / Suspension & Lift Kits / Lift Kits / Rough Country 345.20
Rough CountryPart 345.20 · UPC 00843030126452

4-Inch Lift Kit with N3 Shocks for Plymouth Trailduster (1974)

$899.95MAP price

Free shipping · 30-day returns

Out of stock
Shipping weight: 266 lb.
  • Fits the 1974 Plymouth Trailduster Base: Dana 44 front axle only
  • Not for models equipped with the Cummins diesel engine
  • Front and rear 4-inch lifted leaf springs; rear springs replace the factory block
  • Includes two N3 shock pairs, Dana 44 steering block, U-bolts, bushing and sleeve kit, and hardware
  • Listed install time: 6 - 8 hours. Shipping weight: 266 lb
  • Wheel and tire chart runs from 33x12.50R15 to 35x12.50R22, with trimming noted on some combinations

Check tire fit for this kit → The manufacturer publishes 6 verified tire sizes for this kit, with wheel width, bolt pattern and offset for each.

Will it fit your truck?

✓ Fits

1974 Plymouth Trailduster
Base

✕ Does not fit

  • Models with Cummins diesel engine

ONLY fits models with Dana 44 front axle. New rear leaf springs replaces your factory equipped block. Fitment on this page is based on the manufacturer’s application data.

4-Inch Lift Kit with N3 Shocks, fitment-checked

Rough Country 345.20 is a 4-inch lift kit for the 1974 Plymouth Trailduster, built around front and rear lifted leaf springs with two N3 shock pairs. The truck must have the Dana 44 front axle, and models with the Cummins diesel engine are not covered. The new rear springs take the place of the factory lift block.

This 4-inch lift kit for the 1974 Plymouth Trailduster works through the leaf springs rather than blocks: the supplied rear springs replace the factory-equipped block. Front hardware includes a Dana 44 steering block, so the front axle has to be the Dana 44; models with the Cummins diesel engine fall outside the fitment. The rest of the box covers two N3 shock pairs, a universal U-bolt kit, a spring bushing and sleeve kit, and an installation kit. Rough Country lists 6 - 8 hours for the job. Shipping weight: 266 lb. Confirm the axle before ordering.

Kit contents

  • 2× 4in Rear Leaf Spring 8034
  • 1× Universal U-Bolt Kit 7604$39.95
  • 1× Sprg. Bush & Slv Kit 6072
  • 1× INSTALLATION KIT 7522
  • 2× 4in Front Leaf Spring 8003
  • 1× Steering Block 6603$59.95
  • 1× N3 Shock Pair 23275
  • 1× N3 Shock Pair 23276

Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 345.20 kit fits the vehicles shown in the fitment section above.

Specifications

BrandRough Country
Part number345.20
UPC / GTIN00843030126452
Lift height4 in
Shock packageN3 series
Shipping weight266 lb
CategorySuspension & Lift Kits › Lift Kits

Why buy here

Manufacturer-listed exclusions shown. We publish what a part does not fit, before you buy, not after the return.
Sourced from the application data. Fitment on this page comes from the manufacturer’s application catalog, not a copied listing.
Real install docs. The actual step-by-step guide, linked right on the page.

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