Note: With Free Shock Boot Covers


  • Black Shock Boot Covers, To Protect Shock From Dust and Debris Included Free Of Charge With This Purchase.
  • New front leaf springs with bolt style leaf alignment clamps, anti-friction pads, OE style rubber bushings and tapered leaves for long term performance and great ride qualtiy
  • 1-1/4"" Solid steel track bar with urethane mounts to properly center the axle
  • New front & Rear U-bolt with high nuts & washers
  • Rear 3"" Block kit
  • Performance custom valved Zone Shocks included


  • Dually applications will require different rear 3-7/8"" I.D. u-bolts
  • Will not fit vehicles manufactured before 3-1-1999 with 5/8"" track bar bolt head size.
  • Vehicles equipped with 2 piece rear driveshafts may require the carrier bearing to be lowered.
  • If vehicle is equipped with rear top mounted overload springs 4 of u-bolt part number UBT4035 may be required. Selecting the Ubolt option below will add four (4) UBT4035s to the base kit.
  • Trucks equiped with gas engine may achieve a slightly higher front stance.
  • If truck is equipped with curved/radiussed style front ubolts order kit # F1. If truck is equipped with square style front ubolts order kit # F2.

Quick Specs

  • Front Lift Height: 4 Inch
  • Front Lift Method: Leaf Springs
  • Rear Lift Height: 3 Inch
  • Rear Lift Method: Block Kit
  • Install Time Hrs: 6
  • Difficulty Level 1-5: 2
  • Wheel Size: 16 x 10
  • Back Spacing: 4 Inch
  • Max Tire Size: 35 x 12.50

The Zone Offroad 2005-17 Ford Super Duty radius arm upgrade package features tough replacement radius arms that will work with most 4 & 6"" suspension lifts. Made of fully boxed 1/4"" steel and utilizing large 2-1/2"" greasable urethane bushings, these arms are a considerable upgrade in strength from the stock arms. The arms bolt directly into the factory mounts, and position the axle for the proper caster and wheel location. The lower axle mount utilizes our popular cam lock design, making it adjustable for 4"" or 6"" of lift. These arms will improve ground clearance and strength, not to mention appearance vs. a standard radius arm drop bracket system.

  • UPC: 655623718728
  • Brand: Zone OffRoad
  • 1999 Ford F250 350



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