50% increase in wheel travel
Less body-roll than stock truck
4.5" more travel from ride height to front bump stops
Dual rate coil spring
Lifetime guarantee that coil springs won’t sag
Clears 35" tall tires & 37" tall tires w/ minor trimming
No change in towing capacity
No drive shaft modifications needed
Corrosion resistant anodized aluminum shock bodies with 7/8" shafts (2.5 Aluminum Series shocks)
100% bolt-on system - no drilling, cutting or welding necessary for install This 4.5" System for the 2008-2010 Super Duty is one the best riding suspension systems ICON has ever developed. This system has been engineered using the highest quality materials and components. The dual rate front coil springs combined with our ICON 2.5 Aluminum Series CDCV shocks give these trucks the performance they so desperately need. This system comes complete with front coils, shocks, radius arm drop down brackets, rear blocks and U-bolts and our patented adjustable track bar giving the front end of these trucks perfect track alignment. The Stage 4 system also includes shocks that feature the ICON Compression Damping Control Valve (CDCV) and our 4-Link kit for the ultimate in shock technology and suspension technology.