Manufactured right here in the USA, for well over 80 years Richmond engineers a superior quality ring and pinion gear set that performs faster and more reliably than the competitors. Richmond gears have been producing winners at both the Daytona 500 and the U.S. Nationals for decades, so add a set to your Stang today. And be sure to check out our Mustang Limited Slip Differentials and Driveshafts for your beast.