FABTECH 8" Radius Arm System w/ Dirt Logic Shocks (K2128DB) View larger

FABTECH K2128DL 8" Radius Arm System w/ Dirt Logic Shocks


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Fabtech 8" Radius Arm System w/ Dirt Logic Shocks


2008-2016 Ford F250/F350

2011-2013 Ford F450

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Our patented 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. Front spring lift includes 8" replacement Coil Springs. Completing this system is a Trac Bar relocation bracket, Pitman Arm, Sway Bar drops, U-bolt kit, and replacement rear Leaf Springs.


Kit# K2128DL

  • 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 FTS22025BK Coil Box Kit
1 FTS22139 Component Box
1 FTS22114 Rear Leaf Spring Kit
2 FTS810391 Front Dirt Logic 2.25 Non Resi
2 FTS810051 Rear Dirt Logic 2.25 Non Resi



3. Non dually models only.
27. Front drive shaft modification may be required to clear exhaust on gas motor.
29. Rear leaf springs may reduce load carrying capacity.

Dirt Logic 2.25 Non Resi

The new standard in large diameter mono tube shocks for lifted applications in the OE position as well as multiple shock applications, the 2.25 provides unparalled shock performance. Available with and without reservoir the Dirt Logic 2.25 offers a supple highway ride with outstanding offroad dampening.

  • - 2.25" OD Steel Body
  • - 2.0" OD Billet Aluminum Piston
  • - 7/8" Induction Hardened Chrome Piston Rod
  • - Polyurethane Mounting Ends
  • - Optional 2.25" OD Reservoir w/-8 Stainless Steel O-ring Hose
  • - Black Anodized Finish