4 Inch Radius Arm Lift Kit | 4" Front / 2.5" Rear | Ram 2500 (2025) 4WD Diesel | w/ Nitro Series Shocks | Zone Offroad

Configured with Zone Nitro Series shocks featuring a nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, dual-welded ends for increased strength, self-lubricating seals, internal floating piston (IFP), and a black powder coat finish on a 2-inch diameter steel body.

Overview

The Zone Offroad 4" Radius Arm Suspension Lift Kit is engineered exclusively for 2025 RAM 2500 trucks with diesel engines. This kit lifts the front 4" and rear 2.5", providing a leveled, aggressive stance with enhanced off-road capability and on-road comfort. Heavy-duty Zone Offroad Radius Arms, a forged pitman arm, and your choice of high-performance shocks are included. Designed for standard travel, this system does not require a transfer case indexing ring or crossmember, simplifying installation.

Features

• Heavy-duty radius arms improve strength, handling, and caster control
• High-strength progressive rate coil springs for a great ride on any terrain
• Track bar relocation brackets to re-position the axle
• Forged drop pitman arm to correct steering geometry
• Choice of Zone Nitro or FOX 2.0 Adventure Series shocks
• No transfer case indexing ring or crossmember required

Specifications

• Front Lift Method: Coil Spring
• Front Lift Height: 4"
• Rear Lift Method: Coil Spacer
• Rear Lift Height: 2.5"
• Shocks Included: Yes

Installation

• Estimated Time: 6–8 hours
• Difficulty: Difficult
• Tools Required: Metric socket set

Important Notes

• Diesel models only.
• Will not fit air ride equipped models.
• If truck has rear pinion vibration, it may be necessary to add ZOND5406 to drop the bearing carrier.
• Will not fit Rebel or Power Wagon models.