6 Inch Lift Kit | Diesel | Radius Arm | C/O Vertex | Ford F-250/F-350 Super Duty (05-07)

6 Inch Lift Kit for Ford F-250/F-350 Super Duty (05-07) — Radius Arm Coilover Conversion with Vertex C/O

Take your first-generation Ford Super Duty to new heights with Rough Country's 6-inch Radius Arm Coilover Conversion Suspension Lift. This all-inclusive kit includes everything you need for a total transformation and allows you to run up to 37-inch tires while preserving the smooth, factory ride you expect from your truck.

Durable, factory-conscious geometry

To maintain ride quality, the kit is engineered to keep suspension geometry close to the factory angles. It features ultra-durable Radius Arms (27 lbs each) that bolt into the factory mounts for an easier install and a factory-like angle. The arms include rubber bushings designed for maximum vibration absorption, helping you enjoy a calmer ride on varied terrain.

Vertex Coilover Conversion for confident damping

• Replaces the factory independent coil shock and coil setup with a massive 2.5-inch piston, nitrogen-charged, 8-stage adjustable Vertex Coilover.
• Monotube design with an external reservoir increases oil capacity and damping sensitivity for consistent performance.
• 2.5-inch piston design delivers 56% greater fluid capacity than the average reservoir shock.
• Each kit includes a monotube shock for optimal damping control.

Sturdy construction and mounting hardware

• Top-mounted reservoir brackets and coil-over mounts crafted from 1/4-inch steel.
• Radius Arms and components are designed to bolt into factory locations, simplifying installation and preserving factory-like geometry.

Installation and warranty

• Installation requires cutting and drilling, with an estimated 6–10 hours to complete when done at home.
• Limited Lifetime Replacement Warranty against manufacturer defects, providing long-term peace of mind.

Designed for Ford F-250/F-350 Super Duty trucks (05-07) and engineered to preserve ride quality while allowing up to 37-inch tires.