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Fabtech K2231DL 6″ Radius Arm System With Front Dirt Logic 4.0 Resi Coilovers & Rear DIrt Logic 2.25 Shocks

2017-2022 Ford F-250 4WD Diesel 2017-2022 Ford F-350 4WD Diesel
Fabtech K2231DL 6″ Radius Arm System With Front Dirt Logic 4.0 Resi Coilovers & Rear DIrt Logic 2.25 Shocks
5820.00In stock
2017-2022 Ford F-250 4WD Diesel 2017-2022 Ford F-350 4WD Diesel

Radius Arm Lift System

  • Brand : Fabtech
  • SKU : BKBNK2231DL
  • Part Number : K2231DL
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Product Details

Designed for 2017-2022 Ford F250 and F350 4WD models, Fabtech’s 6″ Radius Arm Lift Kit is built to handle the extreme on- and off-road demands of the Super Duty enthusiast. This system is a heavy-duty upgrade to the factory suspension that delivers increased strength, improved suspension performance, and aggressive styling.

At the core of this high-quality lift kit are Fabtech’s legendary tubular Radius Arms. Developed from extensive off-road racing experience, the tubular design provides exceptional strength while maintaining a smooth, compliant ride quality. This allows the suspension to confidently handle rugged off-road terrain while remaining comfortable for everyday driving.

A heavy-duty Track Bar relocation bracket combined with a new dropped Pitman Arm properly centers the front axle under the vehicle. This correction allows for full lock steering when running 12.50 wide tires on 5″ backspacing wheels, improving steering geometry and overall vehicle control.

The front suspension is equipped with Fabtech’s Dirt Logic 4.0 Remote Reservoir Coilovers, engineered to withstand the most punishing off-road conditions while delivering a plush, controlled highway ride. In the rear, lift blocks with integrated bump stops provide the required lift height without compromising ride quality or factory load-carrying capacity.

The redesigned Radius Arms feature an updated side plate and bold laser-cut Fabtech logo, giving the suspension a modern, aggressive appearance that stands out on and off the trail.

This lift kit is backed by Fabtech’s free 5 Year / 60,000 Mile Powertrain Warranty.

For the ultimate in suspension performance for the Super Duty we offer a bolt on 4 Link System that provides unsurpassed articulation and wheel travel. These 2 diameter heavy wall links feature race style 1 Uniballs for

Radius Arm Lift System; 6 in. Lift; w/Front Dirt Logic 4.0 Resi Coilovers And Rear Dirt Logic 2.25 Shocks;;

Unsurpassed Strength And Performance Patent Pending Radius Arms Fully Tubular Structure Dimple Die Side Plates Adjustable Alignment Cam Allows Caster Adjustment
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Fitment

YearsMakeModelDriveEngine
2017-2022FordF-2504WDDiesel
2017-2022FordF-3504WDDiesel

Features

  • Radius Arms: Redesigned tubular construction with reinforced side plates provides superior strength and a modern aggressive appearance. Offset design allows full steering radius with 12.50 wide tires on 5″ backspacing wheels. Adjustable alignment cams offer up to 1.5 degrees of additional caster adjustment.
  • Dirt Logic 4.0 Coilover Conversion: Heavy-duty 1/4″ thick steel brackets retain the factory coil bucket to securely mount the massive Dirt Logic 4.0 coilovers. Features a 4″ diameter stainless steel shock body with a 1.25″ NitroSteel® piston rod for maximum corrosion resistance and durability. Remote aluminum reservoirs dissipate heat for consistent damping during extreme off-road use.
  • Track Bar Relocation Bracket: 1/4″ thick steel box-style bracket repositions the factory track bar to properly center the front axle at the increased ride height while eliminating deflection throughout suspension travel.
  • Dropped Pitman Arm: Forged steel construction exceeds factory strength specifications and restores proper steering geometry when used with the factory drag link and Fabtech Track Bar.
  • Front and Rear Bump Stop Brackets: Heavy-duty 1/4″ thick steel brackets extend the factory bump stops to prevent over-cycling of the suspension and handle full compression impacts.
  • Sway Bar Drop Brackets: 1/4″ thick steel brackets reposition the front sway bar to allow full suspension cycling without binding at the increased lift height.
  • Brake Line Relocation Brackets: Repositions factory brake lines on the frame to accommodate increased suspension travel without opening the brake system.
  • Steering Stabilizer Brackets: Retains the factory Ford heavy-duty steering stabilizer using reinforced 1/4″ thick steel brackets to help reduce tire shimmy.
  • Rear Lift Blocks: Cast iron rear lift blocks with integrated bump stops provide lift while maintaining factory ride quality and load-carrying capacity.
  • Rear U-Bolts: High-strength U-bolts securely attach the rear differential to the vehicle, ensuring durability under heavy loads and off-road use.

Components

  • 1 × FTS22220 - Component Box
  • 1 × FTS22219 - Rear Block Kit
  • 1 × FTS835232D - Front Dirt Logic 4.0 Resi Coilover (Driver)
  • 1 × FTS835232P - Front Dirt Logic 4.0 Resi Coilover (Passenger)
  • 2 × FTS810052 - Rear Dirt Logic 2.25 Shocks

FRONT DIRT LOGIC 4.0 RESI COILOVER

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 1/4″ NitroSteel® Black Piston Rod
  • Adjustable Coilover Construction
  • 3/4″ Spherical Ball Mounting Ends
  • 4.0″ OD Aluminum Resi

REAR DIRT LOGIC 2.25 SHOCK

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

Quick Specs

  • Tire Size – 37/12.50R17 Wheel Size – 17×9 w/ 4 3/4in BS w/minor trimming
  • Tire Size – 37/12.50R18 Wheel Size – 18×9 w/ 4 3/4in BS w/minor trimming
  • Tire Size – 37/13.50R20 Wheel Size – 20×9 w/ 5in BS w/minor trimming
  • Part Number : K2231DL

Important Notes

  • California Prop 65 Warning
  • 3. Non dually models only.
  • 42. Will not fit gas motors.
  • 163. Vehicles equipped with 2 piece driveshaft require FTS419.
  • 175. Vehicles w/ factory rear sway bar must order extended sway bar link kit part number FTS22276.

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