Fabtech K2145DL Ford F350, F450 Radius Arm Dirt Logic Coilover lift kit

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2011-16 4WD Ford F350, F450 Super Duty 8-Lug 6" Radius Arm Dirt Logic 4.0 Coilover lift kit, Dirt Logic shocks

Product No: K2145DL FT

Availability: In stock


Important Notes


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

Quick Overview

The Fabtech patented Radius Arm lift kit for your 8-Lug Ford F350 or F450 Super Duty also includes a trac bar relocation bracket, pitman arm, billet sway bar end links with heim ends, quad layer limiting straps, carrier bearing shims, a rear block and u-bolt kit. The radius arms feature a full tubular structure strengthened by dimple die side plates, with an adjustable alignment cam at the axle to allow caster adjustment. Rear Dirt Logic 2.25 shocks are included.

Front lift comes from our Dirt Logic 4.0 Coilover Shock conversion that replaces the stock coil spring buckets with the Fabtech Coilover conversion towers with super stout gusseting. The upper coilover mounts are constructed with 1.75 diameter DOM tubing that replace the factory coil spring mounts and span across a wide section of the frame for proper impact load distribution. The lower mounts are 1/4" thick steel that attach to the axle housing. To complete this conversion, opt for the optional Dirt Logic Hydraulic Bump Stops sold separately.

Use 315/70R17 tires w/ 17x8 wheels w/ 4 1/2” BS w/ minor trimming
Use 325/65R18 tires w/ 18x9.5 wheels w/ 4 3/4” BS w/ minor trimming
Use 35/12.50R20 tires w/ 20x10 wheels w/ 5” BS w/ minor trimming

This Fabtech lift kit is covered by their FIVE SIXTY Powertrain Warranty. See Details

View kit installation instructions

    • Make: Ford
    • Model: F350
    • Vehicle: 2011-16 F350 6" Radius Arm/Dirt Logic 4.0 Coilover lift kit, Dirt Logic shocks
    • 2or4: 4WD
    • Make: Ford
    • Model: F450
    • Vehicle: 2011-13 F450 8-Lug 6" Radius Arm/Dirt Logic 4.0 Coilover lift kit, Dirt Logic shocks
    • 2or4: 4WD


Fabtech 6" lift kit fits following models:
2011 F350 F450 Super Duty
2012 F350 F450 Super Duty
2013 F350 F450 Super Duty
2014 F350 F450 Super Duty
2015 F350 F450 Super Duty
2016 F350 Super Duty

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