Richmond Ring and Pinion Gear Kit; 3.55 Gear Ratio (05-09 Mustang GT)Find parts that fit my vehicle

Get Going. One primary reason you purchased a sports car instead of an SUV or pickup is because you want to have fun while driving. Get into the power band faster in your 2005-2009 GT Mustang by upgrading your rear end gears to a set of 3.55s. Enhance your acceleration and fun with a set of Richmond Gears for your Pony.

Superior Quality. Manufactured right in the United States, Richmond Gear uses only the highest standards to produce the highest quality gears in the industry. Inspected and scrutinized to deliver gears with acceptable tolerances, durability and fit, Richmond ensures only the best in machining, finishing and heat treating of their drivetrain components.

Recommended Upgrade. When changing the gear ratio of your Mustang's rear differential, the calibration of your speedometer will no longer be accurate and will display the wrong speed. However, you can easily fix this annoying issue with a Tuner or Recalibration Tool (sold separately).

Installation Notes. An Installation and Bearing Kit is highly recommended by most installers, especially on high mileage Mustangs. Please see ordering options above.

Warranty. Richmond Gears is so confident in the high quality of their ring and pinions that they are backed by a 2-Year / 100,000 Mile No-Nonsense Warranty.

Application. These Richmond 3.55 Ring and Pinion Gears will fit all 2005 to 2009 GT Mustangs equipped with an 8.8" rear end.

Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time your gears are installed. See ordering options above.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov