BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Diesel 2013-2018

BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Diesel 2013–2018 | SKU: 2104FPE

Is This for You?

This kit is for the 2013–2018 Ram 3500 4WD diesel owner who wants maximum front lift — 6 inches — with premium FOX 2.5 Performance Elite damping. This is the DS-generation Ram 3500 diesel platform. If you have a 2019 or newer Ram 3500, stop here — that is the DT platform and requires a different kit. For the same application with FOX 2.0 shocks at a lower price point, see SKU 2104FS.

The Result

6 inches of front lift with corrected caster, reduced bushing bind, and FOX 2.5 Performance Elite damping on the Ram 3500 diesel platform. The truck clears larger tires, sits aggressive, and maintains consistent geometry under diesel towing loads. The FOX 2.5 PE external reservoir shocks deliver heat-managed, consistent damping across sustained use — critical on a diesel tow rig running sustained high loads.

Verified Fitment (OFAS Standard)

• Ram 3500 4WD Diesel: 2013–2018

Does NOT fit: Ram 3500 2019 or newer — different platform (DT), order SKU 1683FPE or 1682FPE for 2019–2026 Ram 3500 4WD diesel. Does not fit Ram 3500 2012 or earlier. Does not fit Ram 3500 gas. Does not fit Ram 3500 2WD. Does not fit Ram 2500 — order SKU 2100FPE for 2014–2018 Ram 2500 4WD diesel. Does not fit Ram 1500.

System Specifications

• SKU: 2104FPE
• 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 2013–2018
• 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
• FOX 2.5 Performance Elite shocks with external reservoirs
• Track bar correction bracket
• All required installation hardware

Installation & Fabrication 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. 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.
• External reservoir routing: Follow BDS and FOX instructions for reservoir placement — avoid pinch points and heat sources.
• Torque specs: Torque all fasteners to BDS specification per included installation instructions. Do not estimate.
• Break-in period: Allow FOX 2.5 PE shocks to break in per FOX recommendations before aggressive off-road use.

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 before ordering. Does NOT fit 2019+ Ram 3500 — different platform. Does not fit gas, 2WD, or Ram 2500. Driveline inspection mandatory at 6-inch lift. This product is non-returnable once installed.

Is your Ram 3500 a 2013–2018 4WD diesel? Do you need 6 inches of front lift, or would 4 inches with a rear block (SKU 1657FPE / 1656FPE) better match your build? Submit your year, model, engine, drivetrain, and target lift height via the contact form and we’ll confirm the right kit.