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

Rear Lift: Leaf Springs — level stance front to rear, multi-leaf progressive design for a smooth ride, eliminates any need for a lift block, maintains factory payload weight ratings, reduces axle wrap for a more controlled and stable feel.

Indexing Ring: 6-Bolt kit, compatible with standard Ram 3500 transfer case bolt pattern.

Shocks: 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.

Overview

BDS Suspension's 6-inch lift kit with 4-Link conversion is engineered for the 2013–2018 Ram 3500 diesel-powered 4WD truck. Designed to improve stance, performance, and capability, this kit includes everything necessary to run up to 37-inch tires. Up front, the kit features diesel-specific Pro-Ride coil springs, 4-Link control arms with conversion mounts, a forged drop pitman arm, track bar bracket for steering correction, bump stops, brake line brackets, and precision-tuned nitrogen charged shocks. In the rear, the kit utilizes a high-strength fabricated lift block or optional leaf springs, longer U-bolts, and a matching set of shocks.

4-Link Conversion

The BDS 4-Link converts the factory stamped steel radius arms to optimize suspension geometry for improved handling, strength, and stability. This bolt-on upgrade uses high-strength 1/4-inch steel brackets to mount HD upper and lower control arms, correcting axle positioning and limiting caster change throughout wheel travel.

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.

Steering Correction

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

Features

• Heavy-duty 4-Link improves strength, handling, and caster control
• 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
• HD transmission crossmember and transfer case indexing ring to correct front driveline angles and allow use of factory driveshafts
• BDS NX2 Nitro gas or FOX Performance Series IFP gas shocks for improved ride and off-road performance
• Clearance for up to 37-inch tires

Specifications

• Lift Height: 6 inches
• Application: 2013–2018 Ram 3500 Diesel 4WD
• 4-Link conversion brackets: high-strength 1/4-inch steel
• Rear block options: 4-inch (tail-low to level stance) or 5-inch (level to tail-high appearance), cast iron construction
• Rear lift alternative: multi-leaf progressive rate leaf springs (level stance front to rear; maintains factory payload weight ratings)
• Rear lift hardware: high-strength fabricated lift block, longer U-bolts
• Indexing ring options: 6-bolt (standard transfer case) or 8-bolt (Aisin heavy-duty 6-speed transmission)
• Shock options: NX2 Nitro Series, FOX 2.0 Performance Series, or FOX 2.5 Performance Elite

Installation

• Estimated Time: 8–10 hours
• Difficulty: Difficult
• 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. Some vehicles may require a rear driveshaft spacer kit 122007 to maintain adequate rear driveshaft engagement. Kits come standard with a 6-bolt indexing ring kit. Ram has an optional Aisin heavy-duty 6-speed transmission available in the 3500 trucks that utilizes a different transfer case mounting bolt pattern (8-bolt). The 8-bolt kit also includes an internal shaft seal extension and new shaft seal.