20-21 F-350 Dually 4 Inch Radius Arm Lift Kit Nitro Shocks Gas Zone Offroad

For optimal strength, ground clearance and styling the 4 Inch radius arm system is the way to go. This complete kit is designed to lift and level the stance with room for up to 37 Inch tires to be installed. Front lift comes from a pair of front full length coil springs to pair with your choice FOX 2.0 adventure series shocks for optimal ride quality.

The front axle is repositioned using a pair of heavy duty replacement radius arms that bolt in place of the factory stamped steel arms.

These arms are built from high strength 1/4 Inch steel, boxed and fully welded with large 2.5 Inch greaseable bushings to isolate road vibrations and improve ground clearance over drop bracket kits.

Steering correction comes from a forged drop pitman arm to improve operating angle while a massive 1/4 Inch steel fabricated track bar drop bracket is used to recenter the front end and keep the steering linkage angles in phase for predictable handling.

Also included for the front are sway bar relocation brackets, brake line drop brackets, bump stop extensions, and single steering stabilizer kit.

In the rear these kits retain the factory overload equipped leaf springs and lift is provided via a replacement lift blocks and longer u-bolts specific to the DRW models.

Finishing off the rear is a rear brake line bracket and tour choice of rear gas shocks to match the front of the truck.
Quick Specs:

• Front Lift Height 4 Inch
• Rear Lift Height 3 Inch
• Material Steel
• Front Lift Method Coil Springs
• Rear Lift Method Block Kit
• Lift Type Suspension
• Wheel Size 22 x 9
• Back Spacing 4.5 Inch
• Max Tire Size 37 x 12.5
• Wheel Size 2 20 x 9
• Back Spacing 2 4.5 Inch
• Max Tire Size 2 37 x 12.5
• Is Adjustable No
• Finish Powdercoat
• Cutting Required No
• Welding Required No

In The Box:

• Coil Springs
• Dropped Pitman Arm
• Rear Lift Block & U-Bolt Kit
• Track Bar Bracket
• Radius Arms

Features:

• Heavy duty fabricated steel replacement radius arms that correct caster alignment while maximizing ground clearance
• Forged pitman arm to correct steering angles
• Heavy duty fabricated track bar relocation bracket to re-center front axle
• Full length Diesel/ Gas specific coil springs for a smooth ride
• Rear lift is specific to dually trucks using U-bolts that are sized correctly for length as well as block height to level the truck and a bump stop extension on the frame

Kit Components:

• ZON7302 2017-2024 F250 Single Stabilizer Zone 1 711745595194
• ZON7700 Nitro- 25.20 x 15.20 x 2-3/8 S50/EB2 2 711745595484
• ZON7718 Nitro- 33.00 x 19.25 x 2-3/8 EB1/EB1 2 711745595590
• ZONF1307 20-21 Super Duty 3 Inch Rear Box Kit 1 711745602380
• ZONF1423 2005-2024 Ford F250/350 4 Inch Front Coil Gas (One) 2 711745599277
• ZONF1601 2005-2022 Ford Super Duty Radius Arm (One) 2 711745599291
• ZONF1614 2017-2024 Ford F250/F350 4-6 Inch Radius Arm Front Box Kit 1 711745599376