** Note that FX4 models require optional Rear U-bolt Kit part number 10914.
** Installation requires a puller tool that is fairly uncommon. Superlift sell this tool separately.
** Some models may require the purchase of aftermarket alignment cams, as some vehicles were not equipped from the factory with cam bolts
** When lifted, the life span of the stock front driveshaft is considerably reduced. Expect a life of 25k to 30k miles. The Superlift replacement shaft is a more "lift friendly" dual cardan design.