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Take your truck to new heights with Rough Country's 6in Radius Arm Suspension Lift! This all-inclusive kit comes with everything you need for a total trasnformation of your truck. Run up to 37in tires while preserving the smooth, factory ride quality with this impressive upgrade.
When changing a vehicle's suspension, the key to preserving ride quality is keeping the geometry of all suspension components as close to their factory angles as possible. Rough Country's new 6-inch Radius Arm Suspension Lift features a set of ultra-durable Radius Arms, precision fit to bolt right into the factory mounts for an easier install and a more factory-like angle. At 27lbs each, these beefy, upgraded Radius Arms dwarf stock equipment and feature durable durable rubber bushings for maximum vibration absorption.
This kit includes a set of lifted coil springs and ultra-durable, fabricated anti-wrap rear blocks that prevent binding and axle wrap. Best of all, this kit comes with your choice of Rough Country's N3, V2 Monotube, or Vertex Adjustable Reservoir shocks! Includes Rough Country's Lifetime Replacement Warranty
Easy bolt-on installation
Increased ground clearance
Levels the front with the rear of the vehicle
Radius arm drop brackets allow for properly set caster. Proper caster is crucial to maintaining factory handling and driveability.
Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.
Fabricated blocks are stronger and offer a longer lifespan than cast blocks.
Specially designed anti-axle wrap rear blocks maintain stock ride quality while eliminating common lift block problem.
Does NOT fit gas engine models. Does NOT fit dually models. Does NOT fit manual shift transfer cases Does NOT fit models with 3.5" rear axle tube ONLY fits models equipped with rear factory contact overload springs Does NOT work on models equipped with Tremor Factory Trim Package
Fitment Year: 2017 2018 2019 2020 2021 2022
Make: Ford
Model: F-250 Super Duty
Submodel: King Ranch
Drive: 4WD
Manufacturer SKU: 55440
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.






