Icon Vehicle Dynamics - 4" Front Leaf Springs- 2000-2004 Super Duty

Icon Vehicle Dynamics - 4" Front Leaf Springs- 2000-2004 Super Duty

  • $1,653.49

4" Front Leaf Springs

This 4" system is designed to lift your Super Duty. 4" Front Leaf Springs provide room for 35” tires. This system uses a custom progressive pack for ultimate ride quality, while providing 4" of lift. This system comes with a 1.75" bump stop spacer (not pictured) to prevent spring fatigue during the suspension cycle. Also included in this kit is 4” rear block kit, with 15” U-bolts for a leveled stance.


  • Increased wheel travel
  • Durable powder coat finish
  • Less body-roll than stock truck
  • Isolates Stock springs for Factory Like Ride Quality
  • No change in towing capacity
  • No drive shaft modifications needed
  • 100% Bolt-on system - no drilling, cutting or welding necessary for install


  • OEM Wheels & Tires Fitment: Yes
  • Recommended Aftermarket Wheels: ICON Alloys | 17x8.5 with 5” Backspace / 6mm Offset
  • Recommended Aftermarket Wheels: ICON Alloys | 20x9 with 5” Backspace / 0mm Offset
  • Recommended Aftermarket Tires: 35:" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)


  • Front U-Bolt Note: all front springs come complete with front u-bolts, washers, and nuts. When ordering any front spring system from icon vehicle dynamics please specify manufacture year.
  • No front driveshaft modification needed. Stock driveshaft is fully functional.
  • Springs are rated for diesel engines only
  • This system may require a carrier bearing drop bracket kit (33700)
  • These are stand-alone kits and are not to be used in conjunction with any other aftermarket kits


  • 31020 (Qty: 1) | 2000-2004 Front 4-8" Box Kit
  • 33100 (Qty: 1) | 1999-2004 1.375" Bump Stop Spacer Kit
  • 138507 (Qty: 2) | 2000-2004 Front 4" Leaf Spring Pack
  • 37001 (Qty: 1) | 2000-2004 Front Semi Round U-Bolt Kit
  • 194275 (Qty: 1) | 1999+ 4" Block Kit
  • 37003 (Qty: 1) | 1999-2010 Rear 15" U-Bolt Kit

California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov

California Residents: CARB WARNING: OffroadAlliance.com will not ship any products that are not CARB approved to California. This only affects CARB related products such that affect car performance and emissions where CARB approval is required.

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