6 Inch Long Arm Lift Kit | Dodge Ram 2500 (2009-2013) / Ram 3500 (2009-2012) 4WD Diesel | Block Kit | 4 Inch Axle | FOX 2.0 Performance Series | BDS Suspension

This variant is configured with a cast iron Block Kit for the rear lift, sized for a 4 inch rear axle, and includes FOX 2.0 Performance Series shocks front and rear. FOX 2.0 shocks feature a 2-inch impact extruded aluminum body, internal floating piston (IFP) monotube design, 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, application-specific valving, and a long-lasting clear anodized finish.

The rear cast iron block is tapered for correct pinion angle with an offset steel pin and hole to restore axle position, reducing axle wrap for a more controlled and stable feel.

Overview

BDS Suspension engineered this 6-inch lift kit with a long-arm conversion for the 2009–2013 Dodge Ram 2500 and 2009–2012 Dodge Ram 3500 diesel-powered truck. Designed to improve stance, performance, and capability, this kit includes everything necessary to set your vehicle up with clearance for up to 37-inch tires. The long lower control arms are built 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 diesel-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 cast steel blocks or leaf springs (depending on configuration), longer U-bolts, and a matched set of shocks.

A pair of full-length, diesel-specific, progressive-rate Pro-Ride coil springs is supplied to provide the correct lift height and a smooth, predictable ride across various terrains. Manufactured from high-tensile steel, these direct OE replacement coil springs are engineered with properly sized wire diameters for maximum reliability without premature coil bind. To optimize steering geometry once lifted, a forged drop pitman arm minimizes the steering angle, paired with a heavy-duty track bar drop bracket to keep them in phase throughout 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 Pro-Ride 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
• Available with NX2 Nitro Series or FOX 2.0 Performance Series shocks for improved ride and off-road performance
• Clearance for up to 37-inch tires

Specifications

• Lift Height: 6 inches
• System Type: Long-arm conversion
• Vehicle Fitment: 2009–2013 Dodge Ram 2500 4WD Diesel / 2009–2012 Dodge Ram 3500 4WD Diesel
• Pro-Ride coil springs: diesel-specific, full-length, progressive-rate, high-tensile steel
• Rear lift options: Cast iron block kit (tapered, offset pin for axle position) or Leaf Springs (multi-leaf progressive design)
• Rear axle diameter options: 3-1/2 inch or 4 inch
• Shock options: NX2 Nitro Series or FOX 2.0 Performance Series

Installation

• Estimated Time: 6–8 hours
• Difficulty: Moderate
• Special Tools Required: Cut-off wheel or equivalent, grinder/sanding disc, pitman arm puller

Important Notes

• Measure rear axle tube before ordering. Some 4-inch axle models with dual overloads will require U-bolt 4068.
• Although unusual, if driveline vibration occurs, order the appropriate transfer case drop kit: 122602 (03–05 Diesel Auto), 122605 (06–08 Diesel Auto), or 122606 (03–13 Diesel Auto with OE mount P/N 52121938AA) available in options or T-case index kit #122801 (auto) or #122802 (manual transmission). Optional transfer case drop kits fit automatic transmission models only.
• Exhaust modification will be required for dual rear shock kit 122009 on 6.7L Diesel models.
• 102009 Rear brake lines will not fit 2012–13 models.