6 Inch Lift Kit w/ 4-Link | Ram 3500 w/ Rear Air Ride (13-18) 4WD | Diesel

Built for diesel Ram 3500 owners who want the tire clearance and hauling stance of a 6-inch lift without sacrificing ride quality. This BDS 4-link lift kit is engineered specifically for trucks running rear air suspension, delivering corrected caster geometry and transfer case re-indexing to preserve driveline angles. You get the capacity and presence of a serious work truck with factory-smooth daily driving.

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 4-link control arms — maintain proper suspension geometry and caster correction as the suspension articulates, keeping your truck tracking straight without fighting the steering wheel.
• Front coil springs — matched to carry the load of a lifted diesel truck all day without sagging.
• Forged track bar — holds lateral positioning stable under articulation and keeps the axle centered under the truck body.
• Transfer case re-indexing bracket — restores correct driveshaft angle and transfer case positioning so you don't lose efficiency or create binding at full droop.

Out back

The rear air suspension is retained and serviced as-is — no cutting, no custom fabrication. BDS integrates the 4-link geometry to work in harmony with the air springs, so you preserve the automatic load-leveling and air-ride comfort the factory engineered into your truck.

Pick your shocks

• BDS NX2 Nitro Series — a smooth, valved shock built for daily driving on and off pavement. Good compliance over bumps, responsive damping, forgiving on rough roads.
• FOX 2.0 Performance Series — monotube design with adjustable high-speed and low-speed compression. Built for drivers who trailer heavy and want tunable, progressive damping. More aggressive on the trail.

Important notes

• Specific to 13–18 Ram 3500 with rear air suspension and diesel engine — not compatible with mechanical rear suspension or gasoline models in this generation.
• Choose between 6-bolt or 8-bolt dually rear axle configuration at purchase — they require different brackets and geometry.
• This kit does not accommodate factory air suspension upgrades or RamBox. If your truck has those options, contact us before ordering.
• Rear driveshaft may require balancing after install due to angle change — we recommend checking with a driveshaft shop if you experience vibration.

Why customers pick this at Road Runner

• BDS-backed warranty honored same-day at our shop — no shipping kits back to the factory.
• Technicians install these every week; they know the geometry, the transfer case bracket, and where the snags are.
• We stock both shock tiers and most hardware — no waiting for backorder on a Monday morning.
• Caster correction keeps the truck pointing true and stable on the highway.
• Transfer case re-indexing preserves fuel economy and eliminates binding risk on rough terrain.

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