6 Inch Lift Kit | Ram 3500 Diesel (2013-2018) 4WD | Leaf Springs | 6-Bolt | NX2 Nitro Series | BDS Suspension

This configuration pairs Leaf Springs in the rear with the 6-Bolt indexing ring kit (standard fitment) and NX2 Nitro Series shocks. NX2 shocks feature a nitrogen-charged twin-tube design, 10-stage velocity-sensitive valving, dual-welded ends, a 1-3/8-inch high-flow piston, self-lubricating seals, and a silver powder coat finish.

Overview

This 6-inch lift kit from BDS Suspension is designed for 2013–2018 RAM 3500 diesel-powered 4WD trucks, providing improved stance, performance, and capability with clearance for up to 37-inch tires. Up front, the kit includes diesel-specific Pro-Ride coil springs, radius arm drop brackets, a forged drop pitman arm, a track bar bracket for steering correction, bump stops, and brake line brackets. In the rear, the kit utilizes a high-strength fabricated lift block (or replacement leaf springs, depending on configuration), longer U-bolts, and a matched set of precision-tuned shocks.

Features

• Heavy duty radius arm drop brackets maintain proper suspension geometry
• Diesel-specific, full-length progressive rate Pro-Ride coil springs for correct lift height and smooth ride across various terrains
• Front track bar relocation bracket to re-center the front axle
• Forged drop pitman arm to correct steering angles
• Front sway bar correction to maintain handling performance
• HD transmission crossmember and transfer case indexing ring to correct front driveline angles and allow use of factory driveshafts
• Rear high-strength fabricated lift block, longer U-bolts (block kit configurations)
• NX2 Nitro Series or FOX 2.0 Performance Series shocks (see variant descriptions for details)

Specifications

• Lift height: 6 inches
• Tire clearance: up to 37 inches
• Rear block options: 4-inch block (tail-low to level stance) or 5-inch block (level to tail-high appearance)
• Rear blocks: cast iron construction for high strength
• Rear blocks designed to provide correct pinion angles, reduce axle wrap, and maintain factory payload weight ratings
• Rear leaf spring multi-leaf progressive design for smooth ride (leaf spring configurations)
• Transfer case indexing ring: 6-bolt (standard) or 8-bolt (Aisin transmission fitment)
• 8-bolt kit includes internal shaft seal extension and new shaft seal

Installation

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

Important Notes

The carrier bearing drop is necessary for models equipped with the two-piece rear drive shaft. Dually with 8-bolt Transmission (Aisin), require BDS122409 Def Relocation Kit. Mega Cabs with 8-bolt Transmission (Aisin), require BDS122409 Def Relocation Kit. Vehicles equipped with a Manual T-case requires BDS122423 Manual transfer case shifter extension. Vehicles equipped with a 2-piece rear drive shaft (carrier bearing), require BDS122406 Carrier bearing drop. Some vehicles may require a rear driveshaft spacer kit 122007 to maintain adequate rear driveshaft engagement.