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Home / Suspension & Lift Kits / Lift Kits / Rough Country 31840
Rough CountryPart 31840 · UPC 00840269917301

2.5-Inch Lift Kit with M1 Monotube Shocks for 2014–2018 Ram 2500 4WD

$769.95MAP price
In stock — 23 available
Shipping weight: 131 lb.
  • Fits 2014–2018 Ram 2500 4WD, Tradesman through Limited trims
  • Does not fit rear air-ride models; does not fit Power Wagon
  • Kit contents: two M1 monotube shock pairs plus front and rear 2.5-inch coil springs
  • Bolt-on installation with factory ride quality retained, per Rough Country
  • Made in the US; GTIN 00840269917301

The Trail Fortress check

Will it fit your truck?

✓ Fits

2014–2018 Ram 2500 · 4WD
Big HornLaramieLaramie LimitedLaramie LonghornLimitedLone StarOutdoorsmanSLTTradesman

✕ Does not fit

  • Rear air-ride models
  • Power Wagon models

About this kit

2.5-Inch Lift Kit with M1 Monotube Shocks, fitment-checked

Rough Country 31840 is a 2.5-inch lift kit for 2014–2018 Ram 2500 4WD models, built around two pairs of M1 monotube shocks plus front and rear replacement coil springs. It does not fit trucks with rear air-ride suspension, and it does not fit Power Wagon models.

This 2.5-inch lift kit for the 2014–2018 Ram 2500 4WD covers Tradesman, SLT, Lone Star, Big Horn, Outdoorsman, Laramie, Laramie Longhorn, Laramie Limited, and Limited trims. The box holds two M1 monotube shock pairs, a front 2.5-inch coil, and a rear 2.5-inch coil, so all four corners are addressed in one package. Rough Country lists it as a bolt-on job that keeps factory ride manners. Confirm your truck is not equipped with rear air-ride suspension before ordering, and note that Power Wagon models are outside the fitment. Shipping weight: 131 lb.

What’s in the box

Kit contents

  • 1× M1 MONOTUBE SHOCK PAIR 770783P
  • 1× M1 MONOTUBE SHOCK PAIR 770800P
  • 1× 2014-2021 RAM 2500/3500 GAS FRONT 2.5" COIL 9445
  • 1× 2014-2021 RAM 2500/3500 REAR 2.5" COIL 9449

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 31840 kit fits the vehicles shown in the fitment section above.

Specifications

Specs

BrandRough Country
Part number31840
UPC / GTIN00840269917301
Lift height2.5 in
Shock packageM1 series
Shipping weight131 lb
Country of originUS
CategorySuspension & Lift Kits › Lift Kits

Why buy here

The fitment-first store

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.