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2008 - 2010 Ford, 2019 - 2021 GMC, Chevrolet ZONE 4" Radius Arm Kit w/ Nitro Shocks 2008-2010 F-250/F-350 *Diesel* (ZONF23N)


Important Kit Notes:

  • Removal of the factory rear block is required. Net rear height gain will vary based on size of the factory block, but will typically result in a level stance.
  • If equipped with a 2-piece rear drive shaft, then a driveshaft alignment kit may be required. It is available in the optional accessories (part #F5401).
  • Rear box kit not designed for dually models.
  • Front exhaust modification may be required to clear the front driveshaft on gas models.
  • 4"" System Only - Although rare, if your vehicle is equipped with both a stock 4"" rear block and a top mounted overload spring, four of u-bolt part number UBT4235 may be required.
  • 6"" System Only - Although extremely rare, front drive line vibration may occur.

Shipping Information

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  • Free Ground Shipping (Lower 48)