BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 2500 4WD Diesel 2014-2018

BDS 6-Inch Radius Arm Lift Kit | FOX 2.5 Performance Elite | Ram 2500 4WD Diesel 2014–2018 | SKU: 2100FPE

The BDS 6-Inch Radius Arm Lift Kit is a complete front lift system for 2014–2018 Ram 2500 4WD diesel, 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 suspension geometry at 6-inch lift height. Diesel-tuned coil springs are engineered for the Ram 2500 diesel’s front-end weight distribution. For the same kit with FOX 2.0 shocks, order SKU 2100FS.

Verified Fitment (OFAS Standard)

• Ram 2500 4WD Diesel: 2014–2018

Does NOT fit: Ram 2500 2019+ — different platform, order SKU 1680FPE for 2019–2026 Ram 2500 4WD diesel FOX 2.5 PE. Does not fit Ram 2500 2013 or earlier. Does not fit Ram 2500 gas — order SKU 1763FPE for 2014–2018 Ram 2500 4WD gas. Does not fit Ram 2500 2WD. Does not fit Ram 3500 or Ram 1500.

Technical Specifications

• SKU: 2100FPE
• 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 2500 4WD Diesel 2014–2018
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty

Shock Tier Selection — 2014–2018 Ram 2500 Diesel 6-Inch

• FOX 2.5 Performance Elite (SKU 2100FPE — this listing): External reservoir, advanced valving, greater oil volume and heat capacity — premium shock tier
• FOX 2.0 Performance Series (SKU 2100FS): Standard shock tier — lower price point

Radius Arm Upgrade — Why It Matters

• 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. Do not drive on public roads before alignment is completed.
• Driveline inspection mandatory: At 6-inch lift height, inspect driveshaft angles and U-joint operating angles after installation.
• External reservoir routing: Follow BDS and FOX installation instructions for reservoir placement to avoid pinch points and heat sources.
• Torque specs: Torque all fasteners to BDS specification per included installation instructions.

Installation Warning

Application-specific. Confirm 2014–2018 Ram 2500 4WD diesel before ordering. Does NOT fit gas — order SKU 1763FPE. Does not fit 2WD, 2013 or earlier, or 2019+ Ram 2500. Does not fit 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 via the contact form and an OFAS fitment specialist will respond with a verified recommendation.