6 inch 4-Link Lift Kit with NX2 Nitro Shocks - 6 Bolt

Features:

• Complete 6" lift kit with true 4-link suspension conversion

• Diesel-specific Pro-Ride progressive-rate coil springs for improved ride quality

• Heavy-duty upper and lower control arms for superior strength and axle control

• Forged drop pitman arm and track bar relocation bracket restore proper steering geometry

• Sway bar drop brackets maintain front-end stability and handling

• HD transmission crossmember and 15° transfer case indexing ring correct front driveline angles

• Includes BDS NX2 Nitro gas shocks (front and rear) for consistent on- and off-road performance

• Clears up to 37” tires with appropriate wheel specs

Take Your RAM 3500 to the Next Level with 4-Link Precision

The BDS 1690H 6-Inch 4-Link Lift Kit delivers a high-performance suspension solution for 2019–2024 RAM 3500 4WD diesel trucks without rear overload leaf springs. Designed to replace the factory radius arm system, this conversion enhances suspension articulation, handling control, and long-term durability, making it ideal for aggressive builds and demanding terrain.

4-Link Conversion Benefits

This system replaces the factory stamped radius arms with a true 4-link setup using high-strength ¼-inch steel brackets and heavy-duty upper and lower control arms. This geometry improves axle positioning, reduces caster change during travel, and allows for better wheel alignment through suspension cycling.

Engineered for Ride Quality and Driveline Compatibility

At 6” of lift, driveline geometry becomes critical. That’s why this kit includes a transfer case indexing ring and reinforced transmission crossmember, enabling the use of the factory front driveshaft. The Pro-Ride coil springs are diesel-tuned to deliver a smooth, consistent ride, while the included NX2 shocks provide controlled damping under load.

Fitment

2019, 2020, 2021, 2022, 2023, 2024 RAM 3500 4WD Diesel

• For models without rear overload leaf springs

• Designed for trucks with 6-bolt transfer case

Fitment Notes

• Not compatible with:

  • Rear overload leaf spring models

  • Rear air-ride suspension

  • Power Wagon models

• Trucks with:

  • Manual transfer case require shifter extension (BDS122423)

  • 2-piece rear driveshaft require carrier bearing drop (BDS122406)

Recommended Wheel & Tire Fitment

• 37 x 12.50 tires

• 17 x 9 wheels with 5.625” backspacing
  Trimming may be required depending on tire and wheel combination.