Ford 3.55 ratio Gear set kit for 9.75 axle from production date 12/20/2010 . Application 2011-2014 F150. Ford part number CL3Z-4209-C. Box was opened for the first time for these pictures, genuine original Ford parts and complete. Our system calculates shipping based on priority mail, this is a heavy item so it can likely ship much cheaper, please contact us prior to ordering if you would like other shipping options.