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Shown with optional Fox shock upgrade

Shown with optional Fox shock upgrade

4" Radius Arm Suspension System | Ford F250/F350 4WD

  • *Approx Price: $1,608.79
  • Front (base kit): 4" Coil Springs
  • Rear (base kit): 5" Blocks
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Shown with optional Fox shock upgrade

Kit Components

Accessories & Pricing


Qty Part# Description
1 013414 Front Box Kit
1 013517 5" Rear Block Kit - 2 Leaf Main
1 033411 Coil Spring Box Kit (Diesel)
1 123251 Radius Arm Box Kit
1 85431 NX2 Single Stabilizer (BDS Only)
2 85700 BDS NX2 Shock
2 85718 BDS NX2 Shock
Qty Part# Description Price
    Total $1,608.79

Important Kit Notes

  • 1. Removal of the factory leaf spring block required. Net rear lift will vary depending on height of factory block, but will result in a level stance.
  • 2. Front exhaust modification may be required to clear front drive shaft (Gas Only)
  • 3. If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
  • 4. 37 x 12.50 tires may require minor trimming.
  • 5. Some models may be factory equipped with a 2-leaf main rear leaf spring pack and others a 3-leaf main. Be sure to order the correct option when customizing your kit.
  • 4" Radius Arm Suspension System | Ford F250/F350 4WD

  • Front (base kit):

    4" Coil Springs

  • Rear (base kit):

    5" Blocks

  • Kit Price

    $1,608.79

Base Kit Components 1520

These components are subject to change based upon your selections.

Qty Part# Description
(1) 013414 Front Box Kit
(1) 013517 5" Rear Block Kit - 2 Leaf Main
(1) 033411 Coil Spring Box Kit (Diesel)
(1) 123251 Radius Arm Box Kit
(1) 85431 NX2 Single Stabilizer (BDS Only)
(2) 85700 BDS NX2 Shock
(2) 85718 BDS NX2 Shock

Compatible Vehicles

These vehicles also are compatible with this product.
Click on a vehicle to see other available kits.

Make Model Year Range
Ford F250 / F350 2017

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Important Kit Notes

  • 1. Removal of the factory leaf spring block required. Net rear lift will vary depending on height of factory block, but will result in a level stance.
  • 2. Front exhaust modification may be required to clear front drive shaft (Gas Only)
  • 3. If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
  • 4. 37 x 12.50 tires may require minor trimming.
  • 5. Some models may be factory equipped with a 2-leaf main rear leaf spring pack and others a 3-leaf main. Be sure to order the correct option when customizing your kit.

Next: Factory Leaf Spring Configuration


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