BDS 6-Inch Radius Arm Lift Kit | Rear Air Ride | FOX 2.0 Shocks | Ram 3500 4WD Diesel 2013-2018

BDS 6-Inch Radius Arm Lift Kit | Rear Air Ride | FOX 2.0 Shocks | Ram 3500 4WD Diesel 2013–2018 | SKU: 2106FS

Is This for You?

This kit is for the 2013–2018 Ram 3500 4WD diesel owner with factory rear air ride suspension who wants 6 inches of front lift with FOX 2.0 damping. This is the DS-generation Ram 3500 diesel platform. This kit is air ride-specific — it includes the brackets required to integrate with the factory rear air ride system and preserve load-leveling functionality at lifted height. If your Ram 3500 does NOT have factory rear air ride, order SKU 2104FPE (FOX 2.5 PE) or SKU 2104FS (FOX 2.0) instead. If you have a 2019 or newer Ram 3500, stop here — that is the DT platform, order SKU 1724FS.

The Result

6 inches of front lift with corrected caster, reduced bushing bind, and FOX 2.0 damping on the DS-generation Ram 3500 diesel platform — with factory rear air ride integration. The factory load-leveling function is preserved at lifted height via air ride-specific rear brackets. The truck sits aggressive, clears larger tires, and maintains consistent geometry under diesel towing loads.

Verified Fitment (OFAS Standard)

• Ram 3500 4WD Diesel: 2013–2018 — with factory rear air ride suspension

Does NOT fit: Ram 3500 without factory rear air ride — order SKU 2104FPE or 2104FS. Does not fit Ram 3500 gas. Does not fit Ram 3500 2WD. Does not fit Ram 3500 2019 or newer — different platform (DT), order SKU 1724FS. Does not fit Ram 3500 2012 or earlier. Does not fit Ram 2500 or Ram 1500.

System Specifications

• SKU: 2106FS
• Brand: BDS Suspension
• Lift Height: 6 inches (front)
• Suspension Type: Radius arm upgrade — heavy-duty BDS arms, air ride compatible
• Rear: Air ride-specific brackets — preserves factory load-leveling functionality
• Shocks: FOX 2.0 Performance Series — diesel-tuned
• Application: Ram 3500 4WD Diesel 2013–2018 — with factory rear air ride
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty

Master Kit Components

• Heavy-duty BDS radius arms — pair
• Diesel-tuned front coil springs
• Rear air ride-specific brackets
• FOX 2.0 Performance Series shocks
• Track bar correction bracket
• All required installation hardware

Installation & Fabrication Notes

• Professional installation required: 6-inch radius arm lift with air ride integration on a diesel platform requires a qualified suspension shop experienced with Ram air ride systems.
• Alignment mandatory: Full front-end alignment required after installation. Do not drive on public roads before alignment is completed.
• Driveline inspection mandatory: At 6-inch lift, inspect driveshaft angles and U-joint operating angles after installation.
• Air ride system verification: Verify factory air ride load-leveling function after installation. If air ride does not function correctly, do not drive — contact your installer.
• Torque specs: Torque all fasteners to BDS specification per included installation instructions. Do not estimate.

Wheel & Tire Fitment

At 6-inch front lift on the Ram 3500 diesel platform, typical fitment runs 37–40-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specs with your wheel/tire supplier before ordering. Oversized tires may require trimming or additional modifications at this lift height.

Installation Warning

Application-specific. Confirm 2013–2018 Ram 3500 4WD diesel WITH factory rear air ride before ordering. Without air ride — order SKU 2104FPE or 2104FS. 2019+ Ram 3500 with air ride — order SKU 1724FS. Does not fit gas, 2WD, or 2012 and earlier Ram 3500. Driveline inspection mandatory at 6-inch lift. Air ride system verification mandatory after installation. This product is non-returnable once installed.

Does your Ram 3500 have factory rear air ride suspension? Is it a 2013–2018 DS-generation or 2019+ DT-generation? Diesel or gas? Do you want FOX 2.0 (this kit) or FOX 2.5 PE (SKU 2104FPE, no air ride)? Submit your year, engine, drivetrain, and rear suspension config via the contact form and we’ll confirm the correct SKU before it ships.