Additional Images

Fabtech 8'' Radius Arm System w/Dirt Logic 4.0'' Coilovers w/Rear Leaf Springs w/Dirt Logic Rear Shocks for 2011 Ford F-250/F-350/F-450 Super Duty 4wd

  • Provides 8'' of Lift
  • Radius Arm Suspension System
  • Heavy Duty Construction
Coupons widget is currently in development and will be available shortly.
Pricing: $5,620.49


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. Also included in this system are billet sway bar end links with heim ends and quad layer limiting straps.

Tire Size:

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


  • Front driveshaft modification may be required to clear exhaust on gas motor

Application List

2011 Ford F-250 SD 4wd

2011 Ford F-350 SD 4wd

2011 Ford F-450 SD 4wd, 8 Lug


Lift Type: Radius Arm Kit

Lift Inches: 8''

Max Tire Size: 37''


  • K2143DB
  • K2143DB
  • Fabtech
  • New


Shipping Information

  • Item Requires Shipping
  • 609.6 lbs.
  • W3.0000” x H5.0000” x L20.0000”
  • This item will require a special quote for shipping charges.

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.