Transforming a 2017-2022 F-250 or F-350 Super Duty diesel into a serious off-road machine requires more than a simple spacer lift. Rough Country's 4-Link 6-inch lift kit replaces the factory suspension architecture with a purpose-built 4-link setup, pairing fixed upper arms with adjustable lower control arms to deliver real geometry correction alongside dramatic ground clearance gains. Radius arm drop brackets maintain proper caster settings so the truck drives straight and tracks predictably on the highway, not just on the trail.
A complete suspension overhaul in one kit. Lifted coil springs raise the front end while fabricated anti-wrap rear blocks handle the rear. Unlike cast blocks, the fabricated steel units resist cracking and deformation under load, and their anti-axle-wrap geometry eliminates the binding and wheel hop common with basic lift block installations. Stainless steel extended brake lines and brake line brackets are included so no additional sourcing is required before the truck hits the road.
Shock absorbers matched to the platform. Rough Country includes nitrogen-charged shock absorbers application-valved specifically for the Super Duty's weight and duty cycle. The valving balances off-road compliance with a composed highway ride, so the truck remains usable every day. Upgraded shock options, including M1 monotube, V2 monotube, and Vertex reservoir units, are available for buyers who push harder off-road or carry heavy payloads regularly.
Configurable to your axle and spring setup. The kit ships in configurations for both 3.5-inch and 4-inch axle fitments, and buyers choose between models with or without the factory overload spring. An optional front driveshaft is also available to complete the build without additional sourcing.
Product Benefits
- 6-Inch Lift Height: Adds substantial ground clearance for larger tires and serious off-road use.
- 4-Link Conversion: Fixed upper arms and adjustable lower control arms replace the factory setup for improved geometry.
- Radius Arm Drop Brackets: Restore proper caster angle, preserving factory steering feel and highway drivability.
- Fabricated Anti-Wrap Rear Blocks: Stronger than cast alternatives; eliminate axle wrap and binding under acceleration.
- Nitrogen-Charged Shocks Included: Application-valved for the Super Duty's weight with multiple upgrade options available.
- Stainless Steel Brake Lines: Extended lines and brackets included for a complete, safe installation.
- Multiple Configuration Options: Choose axle size, overload spring fitment, shock tier, and optional front driveshaft.
- Bolt-On Installation: Designed for straightforward installation without custom fabrication.
- Lifetime Replacement Warranty: Backed by Rough Country's lifetime warranty on the kit components.
Note: Fits diesel models only. Does not fit gas engine models. Does not fit manual shift transfer cases. Does not fit dually models. Does not fit models equipped with the Tremor Factory Trim Package. Models equipped with a 10-speed transmission must remove dial pin.
About Rough Country: Rough Country designs and manufactures suspension lift kits, leveling kits, and off-road accessories for trucks and SUVs. The brand focuses on delivering engineered, bolt-on solutions that give everyday truck owners access to serious lift hardware without requiring custom fabrication or professional installation shops.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Fitment | 2017, 2018, 2019, 2020, 2021, 2022 |
