6 inch Radius Arm Lift Kit with NX2 Nitro Shocks - 8 Bolt

Features

• 6" front lift with diesel-specific Pro-Ride progressive-rate coil springs

• Heavy-duty tubular radius arms improve strength, handling, and caster alignment

• Forged drop pitman arm and HD track bar relocation bracket for precise steering correction

• Front sway bar correction brackets for proper geometry and handling

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

• Choice of BDS NX2 Nitro gas shocks or FOX 2.0 IFP Performance shocks

• Accommodates up to 37” tires with recommended wheel specs

Elevate Your RAM 3500’s Performance and Stance

Designed for RAM 3500 4WD trucks equipped with the 8-bolt Aisin transmission and without rear overload leaf springs, the BDS 1685H 6-Inch Lift Kit transforms your heavy-duty diesel into an aggressive, off-road capable machine. It’s engineered to deliver improved ride quality, handling, and articulation, all while clearing larger tires and maintaining factory driveline geometry.

Upgraded Radius Arms and Coil Springs for Strength and Ride Comfort

The included high-strength tubular radius arms replace the factory stamped units, offering better durability and improved caster adjustment. Paired with Pro-Ride diesel-specific coil springs, the kit ensures a smooth, predictable ride across varying terrain.

Precision Steering and Suspension Geometry

To correct steering geometry at the lifted height, the kit includes a forged drop pitman arm and a heavy-duty track bar drop bracket. These components ensure that the drag link and track bar remain in phase, minimizing bump steer and recentering the axle for controlled handling.

Rear Suspension and Driveline Compatibility

The rear lift is achieved with high-strength steel lift blocks and extended U-bolts, maintaining proper rake and stability under load. A transfer case indexing ring and HD crossmember are included to maintain optimal driveline angles with the factory front driveshaft.

Fitment

2019, 2020, 2021, 2022, 2023, 2024 RAM 3500 4WD Diesel (w/o rear overload leaf springs)

• Designed for trucks with 8-bolt Aisin transmission

• Not compatible with trucks equipped with rear overload springs or rear air-ride

Wheel & Tire Recommendations

• 37 x 12.50 tires with 17 x 9 wheels and 5.625” backspacing
  (Trimming may be required depending on wheel/tire combo)