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Zone OffroadPart # ZOND78F

Zone Offroad 4.5 Inch Lift Kit W/ Radius Arm Ram 2500 (19-24) 4WD · Diesel

Regular price $1,883.47
Regular price B2B price $1,883.47
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  • Front lift 4.5"
  • Max tire 35 x 12.5
  • Rear lift 2.5"
  • Shocks included
  • Install 7-9 hrs
  • Difficulty Difficult
Read the important notes before ordering

Questions about fitment? Live chat or call 866-235-4715

Shock Option

Complete your build

Optional add-ons

Steering Stabilizers

  • SKU ZON7250Details

Accessories

  • SKU ZOND5406Details
  • SKU ZOND5409Details
Inventory: Call or Live Chat
  • Free shippingMost orders $500+
  • 30-day returnsSee policy
  • Warranty supportWe work with the maker
View full details

Questions about fitment?

Talk to a TRU specialist

We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT

Important notes before you order

  1. Will NOT fit air-ride equipped models
  2. Diesel models only
  3. Vehicles with a Manual Shift Transfer Case require a Manual T-Case Indexing Kit. Add ZOND5409 in kit configuration.
  4. Trucks equipped with a 2-piece rear driveshaft require carrier bearing shim kit D5406 (not included with kit)

TRU specialist notes

From the Trucks R Us fitment and install team, beyond the manufacturer's information.

  • Plan for a professional wheel alignment after installing any lift or leveling kit.
  • Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.

Specifications

BrandZone Offroad
Part numberZOND78F
UPC / GTIN810156364129
Front Lift Height4.5"
Front Lift MethodStrut Spacer
Max Tire Size35 x 12.5
Rear Lift Height2.5"
Rear Lift MethodCoil Spring
Shocks IncludedYes
Install time7-9 hrs
DifficultyDifficult
Tools NeededPitman Arm Puller

What's in the box

QtyPartDescription
——ZOND78F – FOX 2.0 Adventure Series(2) FOX98450700 Fox Adv Shock 25.64 x 16.05 x 2-S50/EB1
2FOX98450753Fox Adv Shock 26.85 x 16.76 x Special/EB1
1ZOND12582014-2026 Ram 2500 2.5" Rear Spacer Box Kit
1ZOND14032019-2026 Ram 2500 / 2019-2026 Ram 3500 4.5" Replacement Radius Arm Box Kit
2ZOND14132014-2026 Ram 2500 / 2013-2026 Ram 3500 Replacement Radius Arm Box Kit - Zone
2ZOND3401Coil Spring Box Kit: 2014-2026 Ram 2500 / 2013-2026 Ram 3500 - 4.5" Diesel - 5.5" Gas - Drv Side - Front Coil Spring - Single Spring
1ZOND56122019-2024 Ram 2500 / 2019-2024 Ram 3500 T-Case Index - 6 Bolt - Diesel
——ZOND78N – Nitro Series(2) ZON7700 Nitro- 25.20 x 15.20 x 2-3/8 - S50/EB2
2ZON7753Nitro- 26.2 x 15.7 x 2-3/8 - Special/EB1
1ZOND12582014-2026 Ram 2500 2.5" Rear Spacer Box Kit
1ZOND14032019-2026 Ram 2500 / 2019-2026 Ram 3500 4.5" Replacement Radius Arm Box Kit
2ZOND14132014-2026 Ram 2500 / 2013-2026 Ram 3500 Replacement Radius Arm Box Kit - Zone
2ZOND3401Coil Spring Box Kit: 2014-2026 Ram 2500 / 2013-2026 Ram 3500 - 4.5" Diesel - 5.5" Gas - Drv Side - Front Coil Spring - Single Spring
1ZOND56122019-2024 Ram 2500 / 2019-2024 Ram 3500 T-Case Index - 6 Bolt - Diesel

Features

  • Heavy duty 1/4" steel, laser cut, internally gusseted radius arms improve strength, offer more ground clearance and correct caster.
  • High strength progressive rate front coil springs for a great ride on any terrain.
  • Front and Rear HD track bar relocation brackets to correctly position both axles under the truck.
  • Forged drop pitman arm to correct steering angles.
  • HD transmission crossmember and t-case indexing ring to correct front driveline angles.
  • Nitro series gas or FOX adventure series IFP gas shocks to improved ride and offroad performance.
  • Allows clearance for up to 37" tires

Recommended wheels & tires

  • Note: trimming may be required.
  • 35 x 12.5 with 20 x 9 and 4.5 in. Backspace
  • 37 x 12.5 with 20 x 9 and 5.5 in. Backspace

Installation

  • Estimated install time7-9 hrs
  • DifficultyDifficult
  • Tools neededPitman Arm Puller

Free install support from the Trucks R Us tech team, for you or your shop.

Overview

Up front, a pair of progressive rate, diesel-specific, 4.5" coil springs provides the extra height and smooth handling in the harshest of terrains. A forged drop pitman arm is supplied to correct steering angles. Polyurethane bump stops limit up-travel, while brake line relocation brackets will allow your suspension to easily reach "full droop". To correct the front suspension geometry at the new height, a pair of heavy-duty replacement radius arms is provided that bolt directly into the factory location. These new arms are massive upgrade to the factory stamped units, built from 1/4" American made steel, and internally gusseted with a lower cam adjustment to dial in front end caster. A heavy-duty replacement transmission crossmember as well as a transfer case indexing ring repositions the front driveline output to allow use of the factory drivelines by correcting angles and allowing you to maintain use of 4WD. In the rear, 2.5" heavy-duty coil spacers are supplied to level out the stance and allow you to retain factory ride quality without effecting tow capacity. Extended rear sway bar end links and new bump stops are included to compensate for the lift, and a track bar bracket re-centers the rear axle.

Shock Option

Nitro Series

  • Nitrogen-charged
  • Twin-tube design
  • 10-stage velocity-sensitive valving
  • Dual-welded ends for increased strength
  • Self-lubricating seals
  • Black powder coat finish

FOX 2.0 Adventure Series

  • 2-inch diameter steel body
  • Internal floating piston (IFP) monotube design
  • Large 5/8-inch hard chrome plated heat-treated alloy steel shaft
  • Race-developed high-flow piston design
  • Application-specific valving to maximize performance
  • Long-lasting silver coated finish

Questions

Will this fit my truck?

Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.

Do you help with installation?

Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.

What if the part has a problem?

We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.

Can I return it?

Most items can be returned within 30 days. See our return policy for details.

Do I need an alignment after installing?

Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.

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