Search By Vehicle


Make
Model
Year
Drive

Follow Us


    
 

8" Radius Arm System w/ Front Dirt Logic 4.0 Resi Coilovers & Rear Dirt Logic Shocks - 2011-16 Ford F250 4WD w/ Factory Overload

Back to List
Description
Included Shocks

Fabtech’s Radius Arm system for the Ford Super Duty is built to handle the on and offroad demands of the truck enthusiast. This system is a complete upgrade to the factory suspension and will provide additional strength for use with oversized tires.

 

The heart of this quality system is Fabtech’s tubular Radius Arms. The design of these arms comes from Fabtech race components built with a tubular structure reinforced by a dimple die side plate and heavy gusseting for rugged offroad use. They are a superior upgrade to the stock stamped arms.

 

Included in this system is the massive Dirt Logic 4.0 Coilover Conversion for outstanding damping capacity offroad with a quality on road ride. The Coilover bolts in place of the factory coil spring without removal of the coil spring bucket. The giant 4" diameter aluminum remote reservoir mounts horizontally above the Coilover to allow for full compression travel with oversized tires. The Dirt Logic 4.0 Coilover is the biggest and baddest on the market for the Ford Super Duty.

 

High quality components with properly designed suspension geometry is what sets this system apart from all other Radius Arm suspensions. System includes a free 5 year 60,000 mile powertrain warranty.

 

Each Fabtech component has been designed with specific features and benefits that create this quality suspension system. For a greater understanding of each these components, please see below.

 

Radius Arm

Tubular construction with dimple die side plate for superior strength. Arms are offset for full turning radius with 15.50 wide tires on 5" back space wheels. Adjustable alignment cams on the arms allow for an additional 1.5-2 degrees of caster adjustment. Each Radius Arm features Fabtech’s proprietary 5 Ton Joint on the pivot side at the frame. These joints have been proven in rugged military use for over 10 years and are both quiet and strong.

 

Dirt Logic 4.0 Conversion

Simplistic super stout 1/4" thick steel brackets utilize the factory coil bucket to bolt in the massive Dirt Logic 4.0 Coilover. A 4" diameter stainless steel body with 1.25" NitroSteel piston rod provides maximum corrosion resistance and durability for the most aggressive driving conditions. American made coil springs handle the weight of the Super Duty while providing 2" of increased wheel travel over stock. The remote aluminum reservoir dissipates heat for consistent damping when driving over extreme terrain at high speed. The ultimate of all coilover shocks.

 

Track Bar Bracket

1/4" thick steel bracketry repositions the factory track bar to center the axle under the vehicle with the increased lift height. Super stout box style bracket is designed to eliminate deflection when the track bar moves through its full cycle.

 

Dropped Pitman Arm

Forged steel construction with high strength material that exceeds the factory specifications. Designed specifically for the Super Duty to work in conjunction with the factory drag link and Fabtech’s extended length Track Bar for proper steering functionality.

 

Front Bump Stops

Heavy duty 1/4" thick steel brackets extend the factory bump stop cushions down to eliminate over cycling of the suspension. The bracket’s semi boxed construction can handle the full impact compression of the massive Super Duty.

 

Sway Bar Brackets

1/4" thick steel drop brackets reposition the front sway bar for the increased ride height. This allows the sway bar link ends to fully cycle without binding throughout the extended travel range.

 

Brake Line Brackets

Repositions the factory brake lines down on the frame for the new travel range without having to open the brake system. Keeps factory fluid system intact.

 

Steering Stabilizer Brackets

Retains the stock Ford heavy duty steering stabilizer with a 1/4" thick steel bracket and support brace to help reduce tire shimmy.

 

Driveshaft Shim Kit

Allows for incremental rear driveline angle change at the carrier bearing on two piece driveshaft applications to eliminate vibration with the increased ride height.

 

Rear Lift Blocks

Cast iron 5" rear lift blocks provide additional lift without changing the ride quality of the factory rear suspension or load carrying capacity.

 

A single leaf is inserted into the spring pack to provide an additional 1.5" of rear lift.

 

Rear Sway Bar Brackets

Brackets reposition the sway bar end links down on the frame for the new ride height allowing for proper sway bar functionality without binding.

 

Rear U Bolts

American made U Bolts designed to attach the entire rear differential to the vehicle. A critical part that

demands the best quality for your vehicle.

 

Dirt Logic 2.25 Rear Shocks

Constructed of a stainless steel body with NitroSteel piston rod for maximum corrosion resistance and durability. Superior ride quality both on and offroad. Excellent damping for offroad use.

 

Kit# K2274DL

  • Use 355/65R18 tires w/ 18x9.5 wheels w/ 4 3/4” BS w/ minor trimming
  • Use 37x13.50R20 tires w/ 20x10 wheels w/ 4 1/2” BS w/ minor trimming

 

Oty Part # Description
1 FTS22139 Component Box
1 FTS22105 Rear Box Kit
1 FTS835236D Front Dirt Logic 4.0 Resi Coilover (Driver)
1 FTS835236P Front Dirt Logic 4.0 Resi Coilover (Passenger)
2 FTS810052 Rear Dirt Logic 2.25 Non Resi

 

*FOOTNOTES

27. Front drive shaft modification may be required to clear exhaust on gas motor.

Front Dirt Logic 4.0 Stainless Steel Resi Coilovers


The Dirt Logic 4.0 provides the ultimate in hardcore offroad dampening capacity with superior highway comfort in a big package. This massive high end shock is designed for full size vehicles that required the biggest and best Coilover shock in a bolt on configuration. Nothing else comes close.


  • - 4.0" OD Stainless Steel Body
  • - 3 5/8" OD Billet Aluminum Piston
  • - 1.25" NitroSteel® Black Piston Rod
  • - Adjustable Coilover Construction
  • - 3/4" Spherical Ball Mounting Ends
  • - 4.0" OD Remote Resi

Dirt Logic 2.25 Stainless Steel Non Resi


Dirt Logic 2.25’s are designed to replace factory shocks with a larger, more robust configuration. The 2.25 size is what separates it from other replacement take apart shocks for a superior ride, both on and off road. Shocks are pretuned for each Fabtech suspension, accounting for larger tires, providing the finest all around damping.


  • - 2.25" OD Stainless Steel Body
  • - 2.0" OD Billet Aluminum Piston
  • - 7/8" NitroSteel® Black Piston Rod
  • - Polyurethane Mounting Ends
SKU:
K2274DL
 
Facebook Twitter