BDS 6 Inch Lift Kit | Dodge Ram 2500 (2009-2013)/3500 (2009-2012) 4WD Diesel | Leaf Springs | 4 Inch Axle | NX2 Nitro Series

Configured with Leaf Springs rear lift for vehicles with a 4 inch rear axle. Rear multi-leaf progressive design springs maintain factory payload weight ratings, reduce axle wrap, and create a more controlled and stable feel — eliminating the need for a separate lift block. Paired with NX2 Nitro Series shocks front and rear — featuring a nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, 1-3/8-inch high-flow piston, dual-welded ends for increased strength, and self-lubricating seals with a silver powder coat finish.

Overview

This 6-inch lift kit from BDS Suspension is designed for 2009–2013 Dodge RAM 2500 4WD and 2009–2012 RAM 3500 4WD diesel-powered trucks. The kit improves stance, performance, and capability while providing clearance for up to 36-inch tires. BDS-engineered lower control arms are longer than stock to rotate the axle for proper alignment, and a relocation mounting bracket flattens the upper control arm angle to maintain factory handling characteristics.

Up front, the kit includes diesel-specific Pro-Ride coil springs, all four control arms plus relocation bracket, a forged drop pitman arm, 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 selected option), longer u-bolts, and a matched set of shocks.

A pair of full-length, diesel-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 with properly sized wire diameter, these direct OE replacement coil springs deliver maximum reliability without premature coil bind. A forged drop pitman arm minimizes steering angle and pairs with a heavy duty track bar drop bracket to keep steering geometry in phase through suspension travel while recentering the front axle.

Features

• Tubular short arms improve strength, handling, and caster control
• Heavy duty control arm brackets maintain proper suspension geometry
• Front high-strength progressive rate Pro-Ride coil springs — diesel-specific, manufactured from high tensile steel
• Front track bar relocation bracket to re-position axle
• Forged drop pitman arm to correct steering angles
• Front sway bar correction links to maintain handling performance
• Bump stops included
• Rear heavy duty cast steel lift blocks (tapered for correct pinion angle) or progressive multi-leaf springs depending on selected option
• Longer rear u-bolts included
• Available with NX2 Nitro Series or FOX 2.0 Performance Series shocks

Specifications

• Lift Height: 6 inches
• Tire Clearance: Up to 36 inches
• Vehicle Fitment: 2009–2013 Dodge RAM 2500 4WD Diesel / 2009–2012 Dodge RAM 3500 4WD Diesel
• Rear Lift Options: Cast iron tapered block kit (3-1/2 inch or 4 inch axle) or multi-leaf progressive rear springs (4 inch axle)
• Block kit: Cast iron construction, tapered for correct pinion angle, offset steel pin restores axle position
• Leaf springs: Multi-leaf progressive design, maintains factory payload weight ratings, reduces axle wrap
• Shock Options: NX2 Nitro Series or FOX 2.0 Performance Series
• NX2 Nitro Series: Nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, 1-3/8-inch high-flow piston, dual-welded ends, self-lubricating seals, silver powder coat finish
• FOX 2.0 Performance Series: 2-inch impact extruded aluminum body, internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum mounting ends, 5/8-inch hard chrome plated heat-treated alloy steel shaft, race-developed high-flow piston, application-specific valving, clear anodized finish

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

• 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.
• Rear brake lines (102009) will not fit 2012–13 models.