BDS 4-Inch Radius Arm Lift Kit | FOX 2.0 Shocks | Ram 2500 4WD Diesel 2019-2024

BDS 4-Inch Radius Arm Lift Kit | FOX 2.0 Performance Series Shocks | Ram 2500 4WD Diesel 2019–2024 | SKU: BDS1660FS

The BDS 4-Inch Radius Arm Lift Kit (SKU: BDS1660FS) is a complete 4-inch front lift system for 2019–2024 Ram 2500 4WD diesel models with FOX 2.0 Performance Series shocks. This is the standard shock tier version — if you require the premium FOX 2.5 Performance Elite with external reservoir, order BDS1660FPE instead. This kit replaces the factory radius arms with heavy-duty BDS-engineered radius arms — correcting caster, reducing bushing bind, and maintaining consistent suspension geometry throughout the full range of travel. Diesel-tuned coil springs are engineered for the Ram 2500 diesel’s front-end weight distribution. The FOX 2.0 Performance Series shocks provide improved damping control, heat resistance, and ride quality for towing, hauling, and daily use.

Verified Fitment (OFAS Standard)

• Ram 2500 4WD Diesel: 2019–2024

Does NOT fit: Ram 2500 gas — order BDS1699FS for 2019–2024 Ram 2500 4WD gas (FOX 2.0) or BDS1699FPE (FOX 2.5 PE). Does not fit Ram 2500 2WD. Does not fit Ram 2500 2018 or earlier — different platform. Does not fit Ram 2500 2025 or 2026 without confirmation — contact OFAS at 903-347-3875 to verify current model year compatibility. Does not fit Ram 3500. Does not fit Ram 1500 or Ram 1500 Classic. Confirm model year and drivetrain before ordering.

FOX 2.0 vs. FOX 2.5 Performance Elite — Which Shock Tier

• FOX 2.0 Performance Series (BDS1660FS, this listing): 2.0-inch shock body, no external reservoir. Best for daily driving, towing, and moderate off-road use. Standard shock tier at approximately half the price of the FOX 2.5 PE kit.
• FOX 2.5 Performance Elite (BDS1660FPE): 2.5-inch shock body, external reservoir, advanced valving. Best for demanding towing, high-speed off-road, and sustained use where heat management and consistent damping are critical.

Two Critical Fitment Gates

• 4WD only: Does not fit 2WD models.
• Diesel only: Coil springs tuned for diesel front-end weight. Does not fit gas — contact OFAS for gas variant.

Radius Arm Upgrade — Why It Matters

• Heavy-duty BDS radius arms: Replace factory radius arms with BDS-engineered heavy-duty arms for lifted height, larger tires, and diesel work truck loads
• Caster correction: Maintains proper caster angle at 4-inch lift height
• Reduced bushing bind: Improved arm geometry reduces bind under articulation and load
• Diesel front-end weight: Geometry correction critical on diesel platform — heavier front end amplifies effects of incorrect caster at lifted height
• Track bar correction: Maintains proper axle centering at lifted height

FOX 2.0 Performance Series Shocks

• Improved damping: Significantly improved damping over factory shocks at lifted height
• Heat resistance: 2.0-inch shock body for improved heat dissipation during extended towing
• Ride quality: Tuned for Ram 2500 4WD diesel platform
• FOX warranty: 1-year limited warranty

What’s Included

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

Technical Specifications

• SKU: BDS1660FS
• Brand: BDS Suspension
• Lift Height: 4 inches (front)
• Suspension Type: Radius arm upgrade — heavy-duty BDS arms
• Shocks: FOX 2.0 Performance Series
• Application: Ram 2500 4WD Diesel 2019–2024
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty on shocks

Installation Notes

• Professional installation required: Radius arm replacement and suspension lift requires professional installation by a qualified suspension shop.
• Alignment mandatory: Full front-end alignment required after installation. Do not drive on public roads before alignment is completed.
• Torque specs: All fasteners must be torqued to BDS specifications per installation instructions.
• Break-in period: Allow FOX shocks to break in per FOX recommendations before aggressive off-road use.
• 2025–2026 compatibility: Contact OFAS at 903-347-3875 to confirm 2025 and 2026 Ram 2500 diesel compatibility before ordering.
• Tire sizing: Contact OFAS at 903-347-3875 to confirm maximum tire size before ordering wheels and tires.

Installation Warning

Professional installation required. Alignment mandatory. Does not fit gas, 2WD, or 2018 and earlier Ram 2500. Does not fit Ram 3500. Confirm 2025–2026 compatibility with OFAS before ordering.

Have you confirmed your Ram 2500 is a 2019–2024 4WD diesel model — gas instead? Contact OFAS for gas variant. Need FOX 2.5 Performance Elite instead of FOX 2.0? Order BDS1660FPE. Contact OFAS at 903-347-3875 to verify fitment before ordering.