6 Inch Lift Kit w/ Radius Arm | FOX 2.5 Coil-Over Conversion - Performance Elite | Ram 3500 (13-18) 4WD | Diesel

Built for Ram 3500 diesel owners who demand maximum clearance and precision handling under load — this 6-inch lift kit combines a radius-arm geometry package with FOX 2.5 coil-over conversion to lift your 3500 while preserving steering response and driveline angles. You get up to 37-inch tire capability with corrected caster geometry, so your truck sits right and drives true.

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 assembly — maintains factory-correct caster and pinion angles while lifting, eliminating the bump-steer and accelerated wear you'd get from a basic block lift.
• FOX 2.5 coil-over shocks — replaces the factory coil springs with FOX's IFP design, tuned for the weight and geometry of your 3500 under load.
• 6-inch ride height — clears up to 37-inch tires and opens up approach/departure angles for serious truck work.

Out back

Rear support comes in two flavors: block kit (stiffer, simpler) or leaf springs (more compliant under payload, better for towing). Both are available in 6-bolt and 8-bolt driveshaft configurations to match your truck's original equipment.

Pick your bump stop

• Rubber bump stop — traditional elastomer cushioning, proven durability, entry-level pricing.
• FOX 2.0 Hydro bump stop — progressive hydraulic compression, smoother bottoming, better control at full droop on rough terrain.

Important notes

• This kit is engineered for non-air-suspension Ram 3500 models (2013–2018). OE air-ride trucks require different geometry.
• 6-bolt vs. 8-bolt driveshaft configuration must match your truck's original rear axle — verify before ordering.
• Maximum tire clearance is 37 inches with the radius-arm geometry; oversizing beyond this may contact suspension components.
• Driveshaft re-indexing may be required on some configurations — our technicians confirm fitment during install.
• ABS sensors and brake-line routing are recalibrated as part of the coil-over conversion to ensure proper function at height.

Why customers pick this at Road Runner

• Radius-arm geometry preserves steering feel — you're not just bolting on height, you're correcting the angles that matter for control and tire wear.
• FOX coil-over tuning — shocks are matched to your truck's weight, not generic off-the-shelf parts.
• Professional install in our shop — our technicians bolt these kits in weekly and know every pinch point and sensor location.
• BDS warranty backed locally — if anything goes wrong, you walk in, we handle it, no shipping headaches.
• Diesel-specific engineering — the weight and torque of a 3500 diesel demands stronger components — this kit is built for it.

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