Improve Performance. Wake up your V6-powered pony for faster acceleration off the line with a set of 4.10 Motive Performance Plus gears. A steeper set of gears will get you into your power band faster for faster launches and more punch off the line. Superior Construction. These Motive ring and pinon gears are CNC cut from high grade 8620 gear steel, and factory lapped for precision fit. Each set is hardness tested prior to leaving the factory to ensure the highest quality. Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a Ford Racing Speedometer Recalibration Tool is an inexpensive way to fix this issue. Application. This Motive Performance Plus Ring and Pinion Gear set will fit all 2005 to 2010 V6 Ford Mustangs equipped with a 7.5 rear end. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.