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

Features:

• Provides a 6-inch front lift using diesel-specific progressive-rate Pro-Ride coil springs

• Upgrades to heavy-duty tubular radius arms for enhanced strength, handling, and caster alignment

• Includes forged drop pitman arm and track bar relocation bracket to optimize steering geometry and re-center the axle

• Front sway bar relocation brackets maintain OE handling performance

• Supplied with HD transmission crossmember and 15° transfer case indexing ring to correct driveline angles and retain factory front driveshaft use

• Includes NX2 Nitro gas shocks (front and rear) for improved ride comfort and off-road performance (FOX 2.0 upgrades optional)

• Clears up to 37” tires with correct wheel offset

Lift and Level Your Heavy-Duty RAM 3500 with Confidence

The BDS 1683H Radius Arm Lift Kit is purpose-built for 2019–2024 RAM 3500 diesel trucks equipped with rear overload leaf springs and a 6-bolt transfer case. This comprehensive 6-inch lift system gives your truck the clearance it needs for 37-inch tires while improving suspension articulation, on-road ride quality, and off-road capability.

Reinforced Radius Arms and Ride-Tuned Coil Springs

The system replaces OEM radius arms with heavy-duty tubular steel arms, built with OE-style rubber bushings for quiet operation and long service life. Caster correction is built-in, and adjustability allows fine-tuning alignment. The diesel-specific Pro-Ride coil springs ensure smooth, controlled suspension movement across terrain.

Proper Geometry and Factory Driveline Compatibility

With a 6" lift, proper steering and driveline geometry are critical. That’s why BDS includes a forged drop pitman arm, track bar drop bracket, and a transfer case indexing ring, plus a reinforced crossmember to maintain use of the factory driveshaft and eliminate vibration.

Rear Suspension Design

The rear lift is achieved using high-strength fabricated steel lift blocks, extended U-bolts, and NX2 Nitro shocks, ensuring your RAM remains level, capable, and composed under load or off-road conditions.

Fitment:

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

• With rear overload leaf springs

• With 6-bolt transfer case

Fitment Notes

• Not compatible with:

  • Rear air-ride suspension

  • Power Wagon models

• Additional components required for:

  • Manual transfer case → BDS122423

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

Recommended Wheel & Tire Fitment

• 37 x 12.50 tires

• 17 x 9 wheels with 5.625” backspacing
  (Trimming may be required depending on tire/wheel combination)