Search by Vehicle

3.5" SST Lift Kit - Ford Super Duty F250/F350 4WD (1-pc Drive Shaft Only) 2017-2021

$699.95
In stock
SKU
69-2735

Max Lift: 3.5"F/1.0"R - Maximum Tire Dia: 37".

For use on 2017-2021 Super Duty 4WD with 1-piece drive shaft.

Includes radius arm drop brackets, track bar relocation bracket, front coil spring spacers and tapered 4" lift rear blocks.

Have a question? Please call 800-549-4620

TIRE/WHEEL SIZING GUIDE

Frequently Bought Together
Check items to add to the cart or
  • ReadyLIFT Suspension has engineered a 3.5" lift kit made to fit the 2017-2021 Ford F250/F350 SuperDuty 4WD trucks with a one-piece drive shaft. These new 3.5" lift kits allow for wheel and tire combinations up to 37" while keeping the smooth OEM ride and drivability. This is a complete lift kit includes 4" OEM-equivalent rear blocks with integrated bump stop landings, 3.5" coil spring extensions with sound isolators, an OEM-style panhard drop bracket, front bump stops OEM shock extension brackets, a pair of radius arm drop brackets, and all needed hardware. When used with the maximum size tires, the F250 truck body is raised over 6". ReadyLIFT Smart Suspension Technology is used to make this kit very user-friendly to install, requiring no cutting or drilling. Like all other ReadyLIFT kits, the F250/F350 3.5" SST Lift Kit is guaranteed for life against manufacturing defects.

    Popular wheel and tire sizes used for this vehicle include the stock rims (17x8, 6.5" backspacing) with 37x12.5 tires, 20x9.5 rims (+25" backspacing) with 37x12.5 tires, and 22x9.5 rims (+25 backspacing) with 37x12.5.

    NOTE: For use with trucks with a one-piece drive shaft.

    NOTE:  Single Rear Wheel Trucks ONLY -- Not compatible with Dual Rear Wheels

    NOTE:  The lift blocks in this kit are not designed to work with aftermarket or factory add-on air spring/load leveling kits that attach to the bump stop tangs. Use of this type of air bag system will void all block warranties and can cause failure of the block bump stop tang.

    NOTE:  2020 MY Super Duty may sit slightly taller in the rear than prior model years due block height variations from the Ford factory. The additional rake works well visually with the vehicle's body lines.

    NOTE:  Not compatible with TREMOR editions.

  • Recommended tire size: 37" - 12.5"

    Recommended wheel: 17" and up x 9" wide, +25 offset / 6" backspacing (minor trimming of the front valance may be necessary)

    When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 8-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.

  • Two coil spring spacers with poly sound isolators

    Two front shock extensions.

    Radius arm drop brackets

    Two front sway bar mount spacers.

    One front track bar relocation bracket

    Two OEM style cast rear lift blocks with longer u-bolts and hardware.

    Two bump stop extensions.

    Extended length front brake line brackets.

  • SAEJ2492 Warning: By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehicle may handle differently than that of factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or roll-over during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling characteristics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combinations of modifications) are not recommended and may not be permitted in your state. Consult your owner’s manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.

    Do it yourself!

    Please read Instructions thoroughly and completely before beginning installation. Installation by a certified mechanic is recommended. ReadyLIFT Suspension Inc. is NOT responsible for any damage or failure resulting from improper installation.

    Download Pdf Instructions
    Estimated Installation Time: 6 Hours +/- 1 hour (excluding alignment and wheel/tire assembly)

    Have a certified mechanic do it for you!


Quick Overview

Max Lift: 3.5"F/1.0"R - Maximum Tire Dia: 37".

For use on 2017-2021 Super Duty 4WD with 1-piece drive shaft.

Includes radius arm drop brackets, track bar relocation bracket, front coil spring spacers and tapered 4" lift rear blocks.

Details

ReadyLIFT Suspension has engineered a 3.5" lift kit made to fit the 2017-2021 Ford F250/F350 SuperDuty 4WD trucks with a one-piece drive shaft. These new 3.5" lift kits allow for wheel and tire combinations up to 37" while keeping the smooth OEM ride and drivability. This is a complete lift kit includes 4" OEM-equivalent rear blocks with integrated bump stop landings, 3.5" coil spring extensions with sound isolators, an OEM-style panhard drop bracket, front bump stops OEM shock extension brackets, a pair of radius arm drop brackets, and all needed hardware. When used with the maximum size tires, the F250 truck body is raised over 6". ReadyLIFT Smart Suspension Technology is used to make this kit very user-friendly to install, requiring no cutting or drilling. Like all other ReadyLIFT kits, the F250/F350 3.5" SST Lift Kit is guaranteed for life against manufacturing defects.

Popular wheel and tire sizes used for this vehicle include the stock rims (17x8, 6.5" backspacing) with 37x12.5 tires, 20x9.5 rims (+25" backspacing) with 37x12.5 tires, and 22x9.5 rims (+25 backspacing) with 37x12.5.

NOTE: For use with trucks with a one-piece drive shaft.

NOTE:  Single Rear Wheel Trucks ONLY -- Not compatible with Dual Rear Wheels

NOTE:  The lift blocks in this kit are not designed to work with aftermarket or factory add-on air spring/load leveling kits that attach to the bump stop tangs. Use of this type of air bag system will void all block warranties and can cause failure of the block bump stop tang.

NOTE:  2020 MY Super Duty may sit slightly taller in the rear than prior model years due block height variations from the Ford factory. The additional rake works well visually with the vehicle's body lines.

NOTE:  Not compatible with TREMOR editions.

Tire Fitment

Recommended tire size: 37" - 12.5"

Recommended wheel: 17" and up x 9" wide, +25 offset / 6" backspacing (minor trimming of the front valance may be necessary)

When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 8-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.

Kit Components

Two coil spring spacers with poly sound isolators

Two front shock extensions.

Radius arm drop brackets

Two front sway bar mount spacers.

One front track bar relocation bracket

Two OEM style cast rear lift blocks with longer u-bolts and hardware.

Two bump stop extensions.

Extended length front brake line brackets.

Installation
SAEJ2492 Warning: By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehicle may handle differently than that of factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or roll-over during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling characteristics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combinations of modifications) are not recommended and may not be permitted in your state. Consult your owner’s manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.

Do it yourself!

Please read Instructions thoroughly and completely before beginning installation. Installation by a certified mechanic is recommended. ReadyLIFT Suspension Inc. is NOT responsible for any damage or failure resulting from improper installation.

Download Pdf Instructions
Estimated Installation Time: 6 Hours +/- 1 hour (excluding alignment and wheel/tire assembly)

Have a certified mechanic do it for you!