USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.This gear set will not work in 2011 & newer vehicles without conversion bearings and crush sleeve. Product Features:Fits 2010 and down Ford 9.759.75 ring gear diameter31 spline pinion12 ring gear bolts4.11 ratio