Product Information

The R4Tech air-over-leaf system by Firestone is the next generation in pickup truck suspension. This patented suspension replaces your stock Ford F350 rear suspension with a combination of Sanluis Rassini rear leaf springs, Firestone Airide air springs, Ride-Rite air accessories, trailing link, J-springs, brackets, air compressor and Ride-Rite LS load adaptive shocks manufactured by Rancho. Once installed this R4Tech suspension will provide a suspension unmatched in ride quality, durability and reliability.

Features & Benefits

  • Hybrid Air-over-leaf Suspension System
  • Substantial Ride Quality improvement across all conditions, especially unloaded.
  • Kneel feature allows for lowering of the rear end for easy trailer attachment
  • Rancho load adaptive shocks vary their stiffness based on air spring pressure
  • Sanluis Rassini lower rated leaf springs replace factory springs
  • Axle hop and wrap are controlled with included lower link and J-springs

Product Video

Tech Specs

Items Included:
(2) Sanluis Rassini Rear Leaf Springs, (2) Firestone Air Springs, (1) Firestone Compressor, (2) Rancho load adaptive shocks, Trailing Link, J-Springs brackets and hardware
Weight:
280 lbs.
SKU #W28-760-0014 Fits:
  • 2004 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • 2003 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • 2002 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • 2001 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • 2000 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • 1999 Ford F350 2wd Long Bed Dually (w/Dana 80 axle)
  • Installation Notes

    Designed for a stock height Ford F350. See other listings for lifted vehicles.
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