BDS 4 Inch Lift Kit w/ Radius Arm | Ram 2500 (2025-2026) 4WD Diesel | FOX 2.0 Performance Series

Configured with FOX 2.0 Performance Series shocks. Features a 2-inch impact extruded aluminum body, an internal floating piston (IFP) monotube design, CNC machined 6061-T6 aluminum mounting ends, a massive 5/8-inch hard chrome plated heat-treated alloy steel shaft, and a race-developed high-flow piston with application-specific valving. Long-lasting clear anodized finish.

Overview

The BDS 4-inch Radius Arm Suspension Lift Kit is engineered exclusively for 2025–2026 RAM 2500 trucks with diesel engines. This kit lifts the front 4 inches and the rear 2.5 inches, delivering a leveled, aggressive stance with enhanced off-road capability and on-road comfort. It features heavy-duty tubular BDS Radius Arms, diesel-specific Pro-Ride coil springs, a forged pitman arm, and your choice of high-performance shock absorbers. Designed for standard travel, this system does not require a transfer case indexing ring or crossmember, simplifying the installation process. Backed by the BDS No Fine Print Warranty—if you break it, BDS will replace it, no questions asked.

Features

• 4-Inch Front / 2.5-Inch Rear Lift: Provides a leveled stance and superior off-road performance for 2025–2026 RAM 2500 diesel trucks.
• Heavy-Duty Tubular Radius Arms: High-strength tubular radius arms mount into the factory location, offer caster adjustability for a wide range of lift heights, and use OE-style rubber bushings at the frame mount for smooth, quiet, service-free operation.
• Pro-Ride Coil Springs: Full-length, diesel-specific, progressive-rate coil springs manufactured from high tensile steel with properly sized wire diameter for maximum reliability without premature coil bind.
• Multiple Shock Options: Available with BDS NX2 Nitro Series, FOX 2.0 Performance Series, FOX 2.5 Performance Series HTO, or FOX 2.5 Performance Elite with DSC shocks.
• Simplified Installation: Does not require a transfer case indexing ring or crossmember.
• BDS No Fine Print Warranty: Comprehensive coverage—if you break it, BDS replaces it, no questions asked.

Specifications

• Front Lift Height: 4 inches
• Rear Lift Height: 2.5 inches
• Compatible Vehicles: 2025–2026 RAM 2500 4WD, Diesel engines only
• Radius Arm Construction: High-strength tubular steel
• Radius Arm Bushing: OE-style rubber bushing at frame mount
• Coil Spring Type: Full-length, progressive rate, diesel-specific Pro-Ride
• Coil Spring Material: High tensile steel
• Includes forged pitman arm

Installation

• Estimated Installation Time: 4–5 hours
• Difficulty: Moderate
• Special Tools Required: 8677 Chrysler ball joint separation tool (or equivalent)

Important Notes

• Diesel models only.
• Will not fit air ride equipped models.
• If truck has rear pinion vibration, it may be necessary to add BDS122406 to drop the bearing carrier.