6 inch Radius Arm Lift Kit with FOX 2.0 Shocks - 8 Bolt

Features:

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

• Includes heavy-duty tubular radius arms for enhanced strength, caster control, and articulation

• Forged drop pitman arm and HD track bar relocation bracket ensure precise steering geometry

• Front sway bar relocation maintains proper handling and balance

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

• Equipped with FOX 2.0 Performance Series IFP shocks (front and rear) for improved ride quality and off-road control

• Clears up to 37” tires with proper wheel specs

• Ideal for RAM 3500 trucks with 8-bolt Aisin transmission and rear overload leaf springs

Premium Suspension Performance for Your RAM 3500

The BDS 1685FS Radius Arm Lift Kit is engineered to elevate the capability, stance, and ride quality of your 2019–2024 RAM 3500 diesel. Designed specifically for trucks with rear overload leaf springs and 8-bolt Aisin transmissions, this system improves suspension articulation and front-end geometry while maintaining factory driveline compatibility.

Upgraded Components for Maximum Strength and Ride Quality

This kit replaces factory radius arms with high-strength tubular arms, which offer improved durability and caster adjustability. The diesel-specific Pro-Ride coil springs ensure predictable handling on- and off-road. FOX 2.0 nitrogen-charged shocks deliver the comfort and performance needed for daily driving and rugged terrain alike.

Precision Steering Correction and Driveline Integration

To maintain proper alignment and prevent bump steer, the system includes a forged drop pitman arm and track bar bracket. At this lift height, a 15° indexing ring and upgraded crossmember are required to maintain correct driveline angles with factory driveshafts—both are included.

Fitment

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

• With Rear Overload Leaf Springs

• With 8-bolt Aisin Transmission

Fitment Notes

• Not compatible with trucks without rear overload springs

• Not compatible with rear air-ride or Power Wagon models

• If vehicle has a manual transfer case, BDS122423 shifter extension is required

• If vehicle has a 2-piece rear driveshaft, BDS122406 carrier bearing drop kit is required

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