BDS 4 Inch Lift Kit w/ Radius Arm | Ram 2500 Diesel w/ Rear Air Ride (2014-2018) 4WD | FOX 2.0 Performance Series Shocks

Configured with FOX 2.0 Performance Series shocks front and rear. FOX 2.0 shocks feature a 2-inch impact extruded aluminum body, an internal floating piston (IFP) monotube design, a CNC machined 6061-T6 aluminum mounting ends, a massive 5/8-inch hard chrome plated heat-treated alloy steel shaft, race-developed high-flow piston design, application-specific valving, and a long-lasting clear anodized finish.

Overview

This 4-inch radius arm lift kit from BDS Suspension is designed for 2014–2018 RAM 2500 diesel-powered trucks equipped with factory rear air ride. The kit improves stance, performance, and capability, providing clearance for up to 35-inch tires. Up front, the kit includes diesel-specific Pro-Ride coil springs, heavy-duty tubular radius arms, a forged drop pitman arm, a track bar bracket for steering correction, sway bar relocation hardware, and brake line brackets. In the rear, the kit utilizes heavy-duty air bag spacers, a track bar relocation bracket, bump stop extensions, sway bar links, and a matched set of shocks. New air ride leveling sensor brackets are also included to re-position the ride height sensors, allowing the system to perform at factory ride height and maintain full air bag range of motion.

HD Radius Arms

In place of the factory stamped steel radius arms, BDS supplies a pair of high-strength tubular radius arms. These arms mount into the factory location and offer caster adjustment for a wide range of lift heights, along with an OE-style rubber bushing at the frame mount for smooth, quiet, service-free operation.

Pro-Ride Coil Springs

A pair of full-length, diesel-specific, progressive rate Pro-Ride coil springs provide the correct lift height and smooth, predictable ride across various terrains. Manufactured from high tensile steel, these direct OE replacement coil springs are engineered with properly sized wire diameter for maximum reliability without premature coil bind.

Steering Correction

A forged drop pitman arm minimizes the steering angle once lifted, paired with a heavy-duty track bar drop bracket to keep steering geometry in phase through suspension travel while recentering the front axle.

Features

• Heavy-duty tubular radius arms improve strength, handling, and caster control
• High-strength progressive rate coil springs for a smooth ride on any terrain
• Track bar relocation brackets to re-position the axle
• Forged drop pitman arm to correct steering angles
• Front sway bar correction to maintain handling performance
• HD transmission crossmember and t-case indexing ring to correct front driveline angles and allow use of factory driveshafts
• Heavy-duty air bag spacers, bump stop extensions, and sway bar links in the rear
• New air ride leveling sensor brackets to re-position factory ride height sensors
• Provides clearance for up to 35-inch tires
• Choice of BDS NX2 Nitro Series or FOX 2.0 Performance Series shocks

Installation

• Estimated Time: 6–8 hours
• Difficulty: Moderate
• Tools Required: Step Drill Bit, Drill / Bit Set, Pitman Arm Puller, Welding Equipment

Important Notes

For OE Air Ride systems only.