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Designed to provide a height-adjustable option to the extremely popular ICON Vehicle Dynamics 4.5" Ford super duty suspension systems, these coilover conversions provide excellent on-road ride quality and off-road performance while at the same time allowing for end-user ride height adjustability.

This stage 4 system sees the inclusion of the ICON Vehicle Dynamics Ford super duty radius arm system that feature a sealed pivot bushing that minimizes road feedback and ensures a long life and quiet operation. Additionally, their fabricated, fully boxed design ensures strength and utilizes a profile optimized for tire clearance at full steering lock, making a 37" tall tire clear without coming in contact with the radius arm.

System Components

  • 64050 (Qty: 1) | 08-UP FSD front 4.5" box kit
  • 61721C (Qty: 1) | 05-UP FSD 4WD 4" 2.5 VS RR CDCV bolt in co conversion kit
  • 64035 (Qty: 1) | 05-16 FSD adj track bar w/FK rod end
  • 64041 (Qty: 1) | 05-UP FSD radius arm system
  • 64040 (Qty: 1) | 05-10 FSD radius arm drop kit
  • 195275 (Qty: 1) | 99-UP FSD 5" block kit
  • 37002 (Qty: 1) | 99-10 FSD rear 17" u-bolt kit
  • 37701CP (Qty: 1) | 99-UP FSD 3-6" rear 2.5 VS PB CDCV pair


  • OEM wheels and tires fitment: Yes

Features and Benefits

  • Eibach coil springs guaranteed for life against sagging or breakage
  • Corrosion resistant CAD plated coilover shock body with 7/8" shaft
  • Rear shocks feature one-piece impact extruded aluminum cylinders for excellent corrosion resistance and consistent finish
  • FK rod end bearings for extended longevity and minimal deflection
  • Bolt-in system fits in OE coil bucket location
  • Ride height adjustable coilovers (4-5.5")
  • Increased wheel travel and ride quality over stock
  • Decreased body roll and improved on and off-road ride dynamics
  • Vehicle-specific shock valving provides unparalleled ride quality and control
  • Shocks are fully rebuildable and revalveable
  • Coilover conversion allows for addition of secondary shock
  • Fabricated radius arms with drop brackets offer on vehicle caster adjustment, increased strength, and improved tire clearance at steering lock
  • Limited lifetime warranty

Tech Specs

Download Instructions: K63124R Instructions
Weight: 0 lbs.
Part K63124R fits: 2008-2010 Ford F350

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