F5N/F13N 4 inch Suspension System

The revolutionary new Zone 4" radius arm drop bracket system features new front coil springs that are designed to not only ride great, but will hold up over the long haul. A 1-1/2" solid steel track bar is included to properly center the axle after lifting. This track bar features new oversized, highdurometer urethane bushings for long term performance. The shocks were custom valved to work perfectly with the new Zone coil springs to increase off road performance while still offering unmatched on road ride quality, and the rear kit comes with 5" blocks to replace your factory blocks.