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Richmond Ring and Pinion Gear Kit; 3.73 Gear Ratio (99-04 GT)

Item 66501G99
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$235.01

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

      • Exceptional Quality
      • Handle Extreme Torque Applications
      • First-Run, Never Recycled Materials
      • 3.73 Gear Ratio
      • 8.8" Ring Gear Diameter
      • 2-Year / 100,000 Mile Warranty
      • Fits 1999-2004 GT Mustangs

      Description

      Better Acceleration. If you need to upgrade your 8.8" rear end gears, look no further than the Richmond 3.73 Gears. You'll be able to acceleration faster, leave the line on a dime and get into the power band quicker in your New Edge Pony. Being one of the highest quality gears on the market, you can't go wrong with Richmond in your high performance Mustang.

      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 3.73 Ring and Pinion Gears will fit all 1999 to 2004 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. Note, a 28-spline S-Spring will be required for 28-spline Mustangs (sold separately) if you opt for the Trac-Lok rebuild.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      Richmond 66501G99

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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Ring Gear
      • (1) Pinion Gear

      Tech Specs

      Approximate RPM for 1999-2004 GT


      Manual
      Gear@25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1388854436998   
      2230132214141506159816902
      3151821262733334039484555
      4115016102070253129913451
      578210951480172120342347


      Automatic
      Gear@25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1326745735880   
      2178324963209392246365349
      3115016102070253129913451
      480511271449177120932416
      4.9

      Customer Reviews (29)

        Reviews of Richmond Drivetrain products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 01
          • GT - 99, 00, 01, 02, 03, 04

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