4 Inch Lift Kit w/ Radius Arm | Extended Travel | Ram 2500 (25-26) 4WD | Diesel

Built for diesel Ram 2500 owners who want 4 inches of lift, maximum suspension travel, and corrected geometry without sacrificing daily drivability. This BDS extended-travel radius arm kit lifts your front 4 inches and rear 2.5 inches, clears up to 37-inch tires, and restores proper caster angles and driveline geometry through heavy-duty replacement radius arms, a track bar relocation bracket, and a precision transfer case indexing ring that optimizes suspension droop and driveline angles.

Installed and serviced at Road Runner Wheels & Tires. Most kits go in the same day. Call (678) 400-6467 to schedule.

What you get up front

• Pro-Ride coil springs — engineered to support diesel weight while delivering a smooth, controlled ride through the full range of suspension travel.
• Heavy-duty replacement radius arms — properly position the front axle and correct caster angles lost in the lift, restoring straight-line stability, steering return-to-center, and braking control.
• Track bar relocation bracket — maintains precise steering geometry and keeps the front axle centered.
• Transfer case indexing ring — clocks the transfer case to optimize driveline angles, enable longer suspension travel, and improve off-road capability. Includes a motorsports-grade seal for durability under extreme heat and speed.
• Sway bar links and brake line brackets — keep the suspension operating safely and smoothly at full droop.

Out back

A pair of Pro-Ride coil springs lift the rear 2.5 inches and maintain balanced ride quality from front to rear. Matching rear shocks are tuned to your chosen configuration so you get consistent performance across the whole truck.

Pick your shocks

• BDS NX2 Nitro — comfortable, well-controlled ride for daily driving and light off-road use.
• FOX 2.0 Performance Series IFP — aluminum construction and internal floating piston technology deliver fade-free performance in varied terrain.
• FOX 2.5 Performance Series HTO — increased oil capacity and cooling for enhanced damping control in aggressive terrain and extended off-road runs.
• FOX 2.5 Performance Elite Series with DSC — dual-speed compression adjusters let you independently tune low- and high-speed compression for maximum control and versatility on the trail and highway.

Important notes

• Kit is engineered for 2025–2026 diesel Ram 2500 4WD models only. Not compatible with gas engines, 2WD, or earlier model years.
• Maximum tire size is 37 inches. Larger tires may contact suspension components or bodywork.
• Transfer case indexing is factory-set and must be re-clocked during installation to optimize driveline angles and suspension geometry.
• Bump stop configuration varies by shock tier — coil spring extensions pair with FOX and NX2 options, while coil-over designs pair with premium FOX Elite and HTO variants.

Why customers pick this at Road Runner

• Corrected geometry from day one — radius arms and indexing ring restore proper caster and driveline angles so you drive straight and true.
• Engineered for diesel weight — Pro-Ride springs and shock matching are tuned specifically for the heft and torque of your 6.7L engine.
• Suspension travel you actually use — transfer case re-indexing unlocks droop and capability that basic kits leave on the table.
• BDS warranty backed locally — our techs install these every week and stand behind every job. Warranty work is handled right here.

Ready to build it? Call (678) 400-6467. Hablamos Español.