Made in USA
55840 6 in. Lift Kit, Radius Arm, No OVLD, M1, Ford Super Duty (17-22)
InfoVehicle Info Needed
ROUGH COUNTRYPART NUMBER: 834-55840

55840 6 in. Lift Kit, Radius Arm, No OVLD, M1, Ford Super Duty (17-22)

$1,75995
Truck Freight
ShippingShips on 09/21/2026
Lowest PriceLowest Price Guarantee

Ford
6 in. Lift Kit
  • Radius Arm
  • No OVLD
  • M1
  • Ford Super Duty (17-22)

    Rough Country 55840 Features:

    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 Clevite 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
    • 4-6 hours install time
    • 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 Does NOT fit models equipped with rear factory contact overload springs Does NOT work on models equipped with Tremor Factory Trim Package
    • Front Components: Lifted coil springs, Radius arms, Clocking ring kit, Sway-bar links, Track bar drop bracket, Stabilizer relocation brackets, Pitman arm, Brake line brackets, Bumpstop spacers, Hardware
    • Rear Components: Fabricated lift blocks, Brake line brackets, U-bolts, Hardware
  • Part TypeSuspension Lift Kit
    BrandROUGH COUNTRY
    Package Width260.0
    Weight260.0 PG
    Part CategoryPerformance Parts
    Part FitmentDirect Fit
    Vendor Part Number55840
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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