FABTECH 6" Front Dirt Logic 4.0 Coilover Conversion System (K2135DB) View larger

FABTECH K2135DL 6" Front Dirt Logic 4.0 Coilover Conversion System


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Fabtech 6" Front Dirt Logic 4.0 Coilover Conversion System 


2011-2016 F250/F350 4WD

2011 F450/F550 4WD

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Obtain maximum front suspension damping for Super Duty's with our Dirt Logic 4.0 Coilover Conversion system. The upper coilover mounts are constructed with 1.75 diameter DOM tubing that replaces 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, providing solid mounting points for the Dirt Logic 4.0 Coilover piggyback reservoir shocks.


Kit# K2135DL


Oty Part # Description
1 FTS22143 Component Box
2 FTS835001 Front Dirt Logic 4.0 Coilover



41. Will not work with Leveling or Basic Systems.

Front Dirt Logic 4.0 Coilovers

As the largest vehicle specific take apart, monotube shock on earth, the Dirt Logic 4.0 continues to expand its applications to include a remote reservoir style for GM and Dodge. The Dirt Logic 4.0 will provide the ultimate in hardcore offroad dampening capacity with superior highway comfort. Nothing else comes close.

  • - 4.0" OD Steel Body
  • - 3 5/8" OD Billet Aluminum Piston
  • - 1.25" Induction Hardened Chrome Piston Rod
  • - Adjustable Coilover Construction
  • - 3/4" Spherical Ball Mounting Ends
  • - 4.0" OD Piggyback Reservoir or Remote Reservoir
  • - Black Anodized Finish