BDS 4 Inch Long Arm Lift Kit | Dodge Ram 2500 Power Wagon (2005-2007) 4WD Gas | Leaf Springs | 3-1/2 Inch Axle | NX2 Nitro Series

Rear lift achieved via Leaf Springs — multi-leaf progressive design for a smooth ride that maintains factory payload weight ratings. Sized for a 3-1/2 inch diameter rear axle. Equipped with NX2 Nitro Series shocks featuring nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, 1-3/8-inch high-flow piston, dual-welded ends for increased strength, self-lubricating seals, and silver powder coat finish.

Overview

BDS Suspension engineered this 4-inch lift kit with long arm conversion for the 2005–2007 Dodge Ram 2500 Power Wagon (4WD, Gas) to improve stance, performance, and capability on and off road. The kit provides clearance for up to 37-inch tires. The long lower control arms are designed to reduce caster change through wheel travel, creating a more controlled steering feel. This long arm system retains the factory triangulation of the arms, adding to the stability of the suspension system.

Up front, the kit includes gas-specific Pro-Ride coil springs, all four control arms plus mounting bracket, a forged drop pitman arm and track bar bracket for steering correction, bump stops, sway bar links, and precision-tuned shocks. In the rear, the kit utilizes heavy duty components and a matching set of shocks. Rear lift options include a block kit or leaf springs, and rear axle sizing is available for 3-1/2 inch or 4 inch diameter axles.

Pro-Ride Coil Springs

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

Steering Correction

A forged drop pitman arm minimizes steering angle once lifted. A heavy duty track bar drop bracket keeps the steering in phase through suspension travel while recentering the front axle.

Features

• Tubular long arms reduce caster change and create a more controlled feel on and off road
• Heavy duty control arm brackets maintain proper suspension geometry
• Front high-strength progressive rate coil springs for a smooth ride on any terrain
• Front track bar relocation bracket to re-position axle
• Forged drop pitman arm to correct steering angles
• Front sway bar correction to maintain handling performance
• NX2 Nitro or FOX 2.0 Performance Series shocks to improve ride and off-road performance

Specifications

• Lift Height: 4 inches
• Tire Clearance: Up to 37 inches
• Vehicle Fitment: 2005–2007 Dodge Ram 2500 Power Wagon, 4WD, Gas
• Front Springs: Gas-specific Pro-Ride progressive rate coil springs, high tensile steel
• Rear Lift Options: Block Kit (cast iron tapered blocks) or Leaf Springs (multi-leaf progressive design)
• Rear Axle Options: 3-1/2 inch or 4 inch diameter
• Shock Options: NX2 Nitro Series or FOX 2.0 Performance Series
• Rear block kit: Cast iron construction, tapered for correct pinion angle, offset steel pin to restore axle position
• Leaf springs: Multi-leaf progressive design, maintains factory payload weight ratings

Installation

• Estimated Time: 6–8 hours
• Difficulty: Moderate
• Tools Required: Cut Off Wheel or equivalent, Grinder/Sanding Disc, Pitman Arm Puller, Welding Equipment

Important Notes

• These vehicles were manufactured with two different diameter rear axles. Measure the diameter of your rear axle before ordering — it should be 3-1/2" or 4" in diameter.
• Depending on the factory transmission mount, some 4" kits may require the transfer case indexing kit if a driveline vibration persists. See installation instructions for details.
• If your truck has had the steering gear box changed and the sector shaft diameter measures approximately 1-1/2"–1-5/8", you will need to add part # BDS082404 to your kit.