BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Diesel 2019-2026 | With Overload Leaf | 6-Bolt

BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Diesel 2019–2026 | With Overload Leaf | 6-Bolt | SKU: 1683FPE

The BDS 6-Inch Radius Arm Lift Kit is a complete front lift system for 2019–2026 Ram 3500 4WD diesel models with factory rear overload leaf springs and 6-bolt front axle, paired with FOX 2.5 Performance Elite external reservoir shocks. Heavy-duty BDS-engineered radius arms replace the factory arms — correcting caster, reducing bushing bind, and maintaining consistent geometry at 6-inch lift height. Diesel-tuned coil springs are engineered for the Ram 3500 diesel’s front-end weight distribution. Without factory rear overload leaf — order SKU 1682FPE.

Verified Fitment (OFAS Standard)

• Ram 3500 4WD Diesel: 2019–2026 — with factory rear overload leaf, 6-bolt front axle

Does NOT fit: Ram 3500 without factory rear overload leaf — order SKU 1682FPE. Does not fit Ram 3500 gas — different coil spring tuning. Does not fit Ram 3500 2WD. Does not fit Ram 3500 2018 or earlier. Does not fit Ram 2500 or Ram 1500.

Technical Specifications

• SKU: 1683FPE
• Brand: BDS Suspension
• Lift Height: 6 inches (front)
• Suspension Type: Radius arm upgrade — heavy-duty BDS arms
• Shocks: FOX 2.5 Performance Elite — external reservoir, diesel-tuned
• Application: Ram 3500 4WD Diesel 2019–2026 — with overload leaf, 6-bolt axle
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty

Overload Leaf + Axle Config — Critical Fitment Gates

• With factory rear overload leaf (SKU 1683FPE — this listing): Common on higher trim levels and work truck configurations
• Without factory rear overload leaf — order SKU 1682FPE
• 6-bolt front axle: Confirm your Ram 3500 has the 6-bolt front axle before ordering

Radius Arm Upgrade — Why It Matters at 6-Inch Lift

• Heavy-duty BDS radius arms: Engineered for 6-inch lift height, larger tires, and diesel work truck loads
• Caster correction: Maintains proper caster angle at 6-inch lift — critical where factory geometry deviates significantly
• Reduced bushing bind: Improved arm geometry reduces bind under articulation and load
• Track bar correction: Maintains proper axle centering at lifted height

Kit Contents

• Heavy-duty BDS radius arms — pair
• Diesel-tuned front coil springs
• FOX 2.5 Performance Elite shocks with external reservoirs
• Track bar correction bracket
• All required installation hardware

Installation Notes

• Professional installation required: 6-inch radius arm lift on a diesel platform requires a qualified suspension shop.
• Alignment mandatory: Full front-end alignment required after installation.
• Driveline inspection mandatory: At 6-inch lift, inspect driveshaft angles and U-joint operating angles after installation.
• External reservoir routing: Follow BDS and FOX instructions for reservoir placement.
• Torque specs: Torque all fasteners to BDS specification per included installation instructions.

Installation Warning

Application-specific. Confirm 2019–2026 Ram 3500 4WD diesel WITH factory rear overload leaf and 6-bolt front axle before ordering. Without overload leaf — order SKU 1682FPE. Does not fit gas, 2WD, or 2018 and earlier Ram 3500. Driveline inspection mandatory at 6-inch lift. This product is non-returnable once installed.

Engineering Question? Submit your Year / Make / Model / engine / drivetrain / rear suspension config / axle bolt pattern via the contact form and an OFAS fitment specialist will respond with a verified recommendation.