5 Inch Lift Kit | Diesel | Dual Rate Coils | M1 | Ram 2500 4wd (2014-2018)

Built for Ram 2500 diesel owners who want 5 inches of lift without sacrificing ride quality or factory geometry. This Rough Country lift kit combines dual-rate coils, factory-angled radius arms, and M1 monotube shocks to lift your truck while preserving the suspension angles that keep your Ram handling smooth on and off the road. Accommodates 33"–35" tires.

Installed and serviced at Road Runner Wheels & Tires. Most lift kits go in the same day. Call (678) 400-6467 to schedule.

What's included

• Driver Radius Arm — maintains factory-like suspension geometry and bolts directly into OE mounts for easier installation.
• Passenger Radius Arm — paired with the driver side to preserve axle centerline and reduce vibration absorption stress on rubber bushings.
• Front Box Kit — structural support for the lifted coil spring assembly.
• Rear Coil Spring Box Kit — accommodates the dual-rate rear coils and integrates with factory or air-ride models.
• M1 Monotube Shock Pair (Front) — valved for balanced on and off-road performance with consistent damping across the suspension travel.
• M1 Monotube Shock Pair (Rear) — matched pair tuned to work with the dual-rate coil setup for ride comfort and articulation.
• Front 5" Dual Rate Coil Spring — progressive rate spring that softens initially for bump absorption, then stiffens to support the 5-inch lift height.
• Rear 5" Dual Rate Coil Spring — rear lift spring engineered to work with factory air-ride models using a spacer-based integration.

Important notes

• Does not fit Power Wagon models or gas engine models — diesel 2500 only.
• Requires drilling and cutting during installation.
• On Mega Cab models equipped with a two-piece driveshaft and carrier bearing, there is potential for takeoff vibration; this can be corrected with carrier bearing shimming if needed.
• Air Ride models include a rear sensor arm relocation bracket that lets you adjust rear ride height up to 1 inch higher than the front using multiple 1/4"-spaced mounting points.
• Kit is designed to work with both factory rear coil spring and factory rear air ride suspension configurations.

Why customers pick this at Road Runner

• Factory-angled radius arms preserve suspension geometry — no harsh angles, no premature wear.
• Dual-rate coil springs balance bump comfort with load-carrying capacity, whether towing or rock crawling.
• M1 monotube shocks are professionally valved and matched to the coil rates — no guesswork, no mismatched dampening.
• Professionally installed by techs who perform Ram lifts every week; alignment performed in-house as part of the install.
• Rough Country lifetime structural warranty backed locally — if something breaks, we're here.

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