4 Inch Lift Kit w/ Radius Arm | Ram 3500 w/ Rear Air Ride (19-24) 4WD | Diesel

Built for diesel Ram 3500 owners who demand 35-inch tire clearance and sorted geometry — this 4-inch radius arm lift kit from BDS Suspension lifts your truck 4 inches up front and 3 inches in back, preserves factory driveline angles with transfer case re-indexing, and handles the unique demands of a rear air-ride chassis. You get factory-location radius arms with caster correction, steering geometry fixes, and a shock choice that ranges from daily-driver comfort to high-speed performance.

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 diesel-specific coil springs — progressive rate, full-length springs engineered for the extra weight and load range of a diesel dually.
• Tubular radius arms with caster adjustment — heavy-duty replacements for the factory stamped steel, mounted factory location with OE rubber bushings for quiet operation and geometry tuning across lift heights.
• Forged drop pitman arm and track bar bracket — steering correction that keeps your axle centered and steering angle minimized as you go through suspension travel.
• Sway bar relocation, brake line brackets — everything needed to clear the new ride height without compromise.
• Transfer case indexing ring and new transmission crossmember — allows safe use of the factory front driveshaft without angle or vibration issues.

Out back

High-strength fabricated lift block, heavy-duty air bag spacers rated for the factory air suspension, longer u-bolts, and a matching set of NX2 Nitro or FOX 2.0 Performance shocks keep your rear wheels planted and riding smooth even when you're towing or loaded.

Pick your shocks

• BDS NX2 Nitro Series — tuned for daily comfort and moderate off-road use; a forgiving, smooth ride that keeps your truck composed on gravel and light trails.
• FOX 2.0 Performance Series — velocity-sensitive damping for faster response on rough terrain; preferred by owners who want sharper body control and better bump absorption at speed.

Important notes

• Maximum tire size: 35 × 12.5 inches.
• Fits 2019–2024 Ram 3500 4WD diesel with factory rear air suspension only. Not compatible with mechanical rear springs or non-diesel powerplants.
• Transfer case re-indexing (via supplied ring and new crossmember) is required to maintain factory driveshaft compatibility and prevent angle-related wear.
• Choose 6-bolt or 8-bolt radius arm configuration to match your frame type.

Why customers pick this at Road Runner

• BDS kits installed by techs who dial in diesel trucks every week — transfer case indexing, caster correction, and shock tuning done right the first time.
• Geometry correction is baked in — caster arms, drop pitman, and track bar bracket keep your steering feel and handling predictable, not wrecked.
• Factory air suspension supported — no conversion to springs, no loss of load-leveling capability.
• BDS warranty backed by Road Runner — if something breaks, we make it right without forwarding you to a dealer chain.
• Mount and balance available on most jobs; we stock shocks and brackets.

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