6.5 Inch Lift Kit | FOX 2.5 Coilover Conversion | Chevy Silverado or GMC Sierra 2500HD/3500HD (11-19) | Diesel

Built for diesel truck owners who demand maximum tire clearance and refined handling — this 6.5-inch lift kit replaces the factory coil springs with FOX 2.5 coilovers, giving your 2011–2019 Silverado or Sierra 2500HD/3500HD the stance, articulation, and daily-driving comfort of a premium suspension system while preserving OE driveline geometry.

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

• FOX 2.5 coilover conversion — replaces the OE coil springs with factory-matched FOX units tuned for your truck's weight and load rating, eliminating spring sag and improving caster geometry.
• Radius arm bracket relocation — maintains proper driveline angles and suspension geometry as the truck climbs.
• Brake line extension and relocation hardware — ensures safe, properly routed brake lines under full articulation.

Out back

Rear block kits come in 3-inch or 5-inch options, with or without overload springs — choose based on your payload needs and towing setup. Overload springs add support under heavy loads; block-only setups suit lighter use.

Pick your shocks

• FOX 2.0 Performance Series — comfortable, responsive daily-driver shocks with solid off-road tuning and everyday value.
• FOX 2.5 Performance Elite — premium internal floating piston (IFP) dampers with remote reservoirs, adjustable high-speed and low-speed compression, and rebound tuning for maximum control on rough terrain and highway cruising alike.

Important notes

• FOX 2.5 coilovers are fixed-length and non-adjustable in ride height — the lift is set at installation and matched to your truck's GVWR and engine type (diesel vs. gas variants differ).
• Overload spring selection is critical: confirm your payload and towing profile before ordering to avoid under- or over-springing.
• Diesel engines are heavier; kits are engineered specifically for diesel 2500HD and 3500HD models. Do not cross to gas variants.

Why customers pick this at Road Runner

• BDS engineering matched to your truck's weight and load — not a one-size-fits-all bolt-on.
• FOX coilovers professionally installed by technicians who specialize in heavy-duty diesel suspensions.
• Full BDS warranty backed by local expertise and service history on file.
• Preserve factory driveline geometry — no binding, no vibration, no guessing.
• Professional install in our shop on most kits keeps your truck off the lift long.

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