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Richmond Ring Gear and Pinion Kit - 4.56 Gears (05-09 GT)

Market Price $267.21 You Save 9% ($24.29)
Our Price

$242.92

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  • Item 66500G05
  • MPN# 66500G05

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Exceptional Quality
  • Handle Extreme Torque Applications
  • First-Run, Never Recycled Materials
  • 4.56 Gear Ratio
  • 8.8" Ring Gear Diameter
  • 2-Year / 100,000 Mile Warranty
  • Fits 2005-2009 GT Mustangs
Enhanced Performance. Get more pull off the line by upgrading your rear end with Richmond 8.8" 4.56 Gears. Designed to get you into the power band faster, this 4.56 gear ratio is perfect for the 2005-2009 GT Mustang owner who loves muscle cars and wants to get the most of their investment.

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. Due to this high numeric gear ratio, it will require a notched gear cross pin for proper installation.

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 4.56 Ring and Pinion Gears will fit all 2005 to 2009 GT Mustangs equipped with an 8.8" solid axle 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.

Fitment: 2005 2006 2007 2008 2009 Details

What's in the Box
  • (1) Ring Gear
  • (1) Pinion Gear
Installation Info
Tech Specs

Approximate RPM for 2005-2009 GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4753 6654        
2 2812 3937 5062 6187    
3 1856 2599 3341 4084 4826 5569
4 1406 1969 2531 3094 3656 4219
5 956 1339 1721 2104 2486 2869


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4528 6339        
2 3220 4508 5796      
3 2166 3032 3898 4764 5630 6497
4 1406 1969 2531 3094 3656 4219
5 998 1398 1797 2197 2596 2995
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09

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