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

Built for diesel Ram 2500 owners who want a tougher stance, better off-road manners, and the on-road comfort to live with every day. This BDS Suspension 6-inch Extended Travel Radius Arm Lift Kit is engineered specifically for 2025–2026 Ram 2500 4WD diesel trucks and clears tires up to 37 inches — all while preserving the driveline geometry that keeps the truck feeling factory on the highway.

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

• BDS Pro-Ride coil springs — tuned for the added weight of the Cummins-powered diesel platform, smooth and controlled under load.
• Heavy-duty replacement radius arms — the heart of this kit. They reposition the front axle, correct the caster lost when lifting, and restore straight-line stability, steering return-to-center, and braking feel. Reinforced construction stands up to both highway miles and trail abuse.
• Track bar relocation bracket — re-centers the front axle and keeps steering geometry tight.
• New 10-bolt transfer case indexing ring — clocks the t-case for optimized driveline angles and more suspension droop. The new motorsports-grade seal handles extreme heat and speed with less friction and longer service life than the factory unit. This is what unlocks the "extended travel" in the name — basic lift kits skip this step.
• Sway bar end links, brake line brackets, and matched shock absorbers — for the configuration you choose.

Out back

Lift is delivered through a pair of BDS Pro-Ride rear coil springs with matched rear shocks, so ride quality stays balanced front to rear instead of bouncing or porpoising under load.

Pick your shocks

• BDS NX2 Nitro Series — comfortable daily driver and light off-road use.
• FOX 2.0 Performance Series — aluminum body, internal floating piston, fade-free under repeat hits.
• FOX 2.5 Performance Series — more oil, more cooling, more control on rougher terrain.
• FOX 2.5 Performance Elite with DSC adjusters — race-inspired tuning. Independent low- and high-speed compression adjustment, dialed in for the way you drive.

Important notes

• Maximum tire size is 37 × 12.5 inches.
• Driveline geometry is preserved through caster-correction radius arms and transfer case re-indexing, maintaining factory steering feel and braking response.
• Front lift height is 6 inches; rear lift height is 4.5 inches for optimized angles and travel.

Why customers pick this at Road Runner

• Clears 37" tires with corrected geometry — not a "good enough" spacer kit.
• Restores caster, steering precision, and braking feel after lift.
• Re-indexed transfer case for longer travel and proper driveline angles.
• BDS lifetime warranty on suspension components, backed locally.
• Professionally installed by techs who do these every week — not a YouTube tutorial.

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