6 Inch Lift Kit w/ Radius Arm | Ram 3500 (13-18) 4WD | Diesel

Built for Ram 3500 diesel owners who want maximum clearance without compromising driveline geometry. This 6-inch radius arm lift preserves factory caster angles and transfer case position — critical for diesel longevity and smooth steering feel. Choose between block heights (4", 5") and axle configs (6-bolt, 8-bolt) to match your truck's foundation.

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

• Radius arm brackets and hardened fasteners — engineered to maintain OE caster while lifting. Diesel rigs run heavier; these are built for the load.
• Front coil springs — rated for your lift height and axle rating, tuned for ride quality on and off pavement.
• Stabilizer bar links and drop brackets — keeps your steering geometry square and responsive after the lift.

Out back

Rear block kit (your choice of 4" or 5") stacks under the leaf springs to match front height. No springs replaced — blocks integrate cleanly with your existing suspension package.

Pick your shocks

• BDS NX2 Nitro Series — the value choice. Nitrogen-charged monotube for smooth, consistent damping on daily drives and light trail work. Proven reliability.
• FOX 2.0 Performance Series — mid-range comfort and control. Better response on uneven terrain, suitable for mixed duty.
• FOX 2.5 Performance Series HTO — tuned for heavy diesel trucks. Remote-mounted reservoir handles heat and workload better on long hauls.
• FOX 2.5 Performance Elite — top-tier damping with adjustable compression and rebound. Premium feel; premium durability for serious use.

Important notes

• Fits 2013–2018 Ram 3500 4WD diesel only — non-air suspension models.
• Choose your block height (4" or 5") and axle bolt pattern (6-bolt or 8-bolt) at checkout to ensure correct fitment.
• Radius arm design preserves factory caster geometry — no secondary issues with steering or tire wear down the road.

Why customers pick this at Road Runner

• Professionally installed by technicians who work on Ram 3500s every week — no guesswork on torque specs or geometry setup.
• BDS warranty backed locally. Any issue, you walk in; we handle it.
• Caster correction engineered in — your truck will steer true and your tires will last.
• Block-and-spring approach proven on thousands of diesel trucks nationwide — reliable, predictable ride quality.
• Shock options from budget to premium — invest exactly what your use demands.

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