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2017-2019 Ford F250/F350 4WD

4" Suspension System

Zone Offroad F48N/F50N
Shown with Nitro Shock Upgrade
Shown with Nitro Shock Upgrade
4" Suspension System
4" Suspension System

Zone Offroad

p/n F48N/F50N

Base Price


Build/Buy This Kit

Availability: In-Stock
This product usually ships within 24 hours and may ship today if ordered before 1pm est.

Quick Specs

View Zone Offroad F48N/F50N Instructions

View Product Warranty

Featured Technology & Benefits

  • Full Height Front Coil Springs
  • Heavy Duty Radius Arm Drop Brackets
  • Track Bar Relocation Bracket
  • Dropped Pitman Arm
  • Bump Stop Relocation Brackets
  • Brake Line Relocation Brackets
  • Sway Bar Drop Brackets
  • Rear 5" Blocks
  • Available with Performance Valved Hydro, Nitro Gas, or Fox 2.0 Adventure Series Gas Shocks
  • Limited Lifetime Warranty

This complete suspension system includes full length replacement coil springs designed specifically to offer improved on-road/off-road performance with the weight of the diesel Super Duty. To maintain the suspension geometry with the additional lift a pair of radius arm drop brackets are bolted into the factory frame mounts to correct the caster positioning. Steering correction comes from a forged drop pitman arm to improve operating angle while a massive 1/4" steel fabricated track bar drop bracket is used to reposition the track bar mount to re-center the front end and keep the steering linkage angles in phase for predictable handling. Also included for the front of this 4" lift kit are sway bar relocation brackets to correct sway bar operating angle, brake line drop brackets to reposition the factory lines, bump stop extensions to control suspension compression and new steering stabilizer mounts to install the Zone nitro single stabilizer cylinder in place of the factory steering stabilizer.

For the rear of this 4" lift system, a replacement block is used to lift and level the stance, and eliminate the need to stack blocks. These kits maintain the factory leaf springs and overloads so your truck maintains its tow capability. A 5" fabricated block has an integrated bump stop wing and bolts into place using a pair of extended black e-coated u-bolts. Due to the factory equipped 2-leaf main springs or a 3-leaf main springs w/ overload, Zone offers multiple rear box kits with u-bolts to fit your particular setup.

If you're looking to get more out of your 2017 Ford Super Duty then this kit is for you. Take your 2017 Super Duty to new heights with this 4" lift kit from Zone Offroad backed by the peace of mind with Factory Protection Plus.

Important Notes!

  • If equipped with a 2-piece rear driveshaft, an F5401 carrier bearing drop kit may be required
  • 37x12.50 tires may require minor trimming
  • Must determine if vehicle is equipped with standard (2-leaf main) or heavy payload (3-leaf main w/overload) factory rear leaf spring packs. Standard 2-leaf main applications will require kit # F48/F48N, heavy payload 3-leaf main w/ overload applications will require kit # F50/F50N. See example image image below reference:

This product fits the following applications:

  • 17-19 Ford F250 4WD Diesel
  • 17-19 Ford F350 4WD Diesel
Click to view by year
  • 2017 Ford F250 4WD Diesel
  • 2018 Ford F250 4WD Diesel
  • 2019 Ford F250 4WD Diesel
  • 2017 Ford F350 4WD Diesel
  • 2018 Ford F350 4WD Diesel
  • 2019 Ford F350 4WD Diesel

Quick Specs

  • Front Lift Height: 4″
  • Front Lift Method: Coil Springs
  • Rear Lift Height: 3″
  • Rear Lift Method: Block Kit
  • Install Time Hrs: 4-6
  • Difficulty Level 1-5: 2
  • Wheel Size: 17 x 9
  • Back Spacing: 4.5 - 5″
  • Max Tire Size: 37 x 12.50
  • Wheel Size: 18 x 9
  • Back Spacing: 4.5 - 5″
  • Max Tire Size: 37 x 12.50
  • Wheel Size: 20 x 9
  • Back Spacing: 4.5 - 5″
  • Max Tire Size: 37 x 12.50

Click/tap photo or caption to open high resolution image [3000x2000, 1500x1000 or 660x440] in a new window.

When used for commercial purposes, Zone Offroad Products images may only be used to promote Zone Offroad and its products. Redistribution or duplication of these images without the express written consent of Zone Offroad is strictly prohibited.

Shown with Nitro Shock Upgrade

Shown with Nitro Shock Upgrade

4" Suspension System

4" Suspension System

Build Your Kit

After you've selected everything you need for your next project, you can add it to your cart or place it in your garage (You must be logged in to your Zone account to use garage).

Click/tap thenext to selections and accessories for details if available.

Required Vehicle/Kit Selections

Vehicle Specific Requirement

Vehicle Specific Requirement

Optional Upgrades & Accessories

Steering Upgrades

Total base price + selected options $987.15

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