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

Built for diesel Ram 3500 owners who need serious hauling capacity without sacrificing ride quality, this 4-inch lift kit with 4-Link conversion delivers the stance, geometry correction, and tire clearance that sets your truck apart. Works with factory rear air ride. Supports up to 35" tires while preserving proper driveline geometry through the front axle recentering and caster correction BDS engineered into every component.

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

• Diesel-Specific Pro-Ride Coil Springs — Progressive-rate, full-length springs tuned for the weight and torque of your diesel engine, delivering 4 inches of lift with a predictable ride across pavement and trail.
• 4-Link Conversion with Control Arms — High-strength 1/4-inch steel brackets and heavy-duty upper and lower control arms replace the factory stamped radius arms, optimizing suspension geometry, limiting caster change, and adding serious stability under load.
• Steering Correction Kit — Forged drop pitman arm and heavy-duty track bar bracket recenter the front axle and keep steering in phase through suspension travel, so your truck handles as tight as it looks.
• Bump Stops & Brake Line Brackets — All hardware and bracketry to ensure clean installation and reliable operation.

Out back

A high-strength fabricated lift block raises the rear 3 inches while a heavy-duty air bag spacer maintains the factory air ride function. Longer u-bolts secure everything solid, and matching shocks (your choice of tier) handle the new geometry without fade.

Pick your shocks

• BDS NX2 Nitro Series — Nitrogen-charged comfort for daily driving and light off-road use. Smooth damping, predictable response, and long-term durability at the best value.
• FOX 2.0 Performance Series — Premium tuning for aggressive terrain. Speed-sensitive damping, better heat dissipation, and responsive control whether you're towing heavy or pushing hard off-road.

Important notes

• This kit is engineered for 2013–2018 RAM 3500 diesel trucks equipped with factory rear air ride suspension. Verify your model and powertrain before ordering.
• Maximum tire size is 35 x 12.5 inches. Larger tires will rub and compromise the suspension geometry that this kit corrects.
• The 4-Link conversion and caster correction geometry are integral to proper handling and driveline operation. Do not skip or modify these components.
• Rear air ride function is preserved by the air bag spacer; however, the suspension travel and ride height will change from factory. Verify that your specific trim and options are compatible.

Why customers pick this at Road Runner

• Professionally installed by technicians who service BDS kits every week — no guesswork, no comebacks.
• BDS warranty backed locally. Any issue, you walk in the door and we handle it.
• We stock both shock tiers in-house, so you can upgrade or swap on the spot if you change your mind.
• Caster correction and 4-Link geometry are built right the first time — your truck will track straight and handle planted, even at full stuff.
• Mount and balance available means you drive home lifted, not in a rental.

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