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EXCEL from Richmond Ring Gear and Pinion Kit - 4.56 Gears (99-04 GT)

Market Price $186.99 You Save 12% ($22.04)
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$164.95

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  • Item 21529G99
  • MPN# F88456

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    Features & Details

    • Superior Quality
    • 4.56:1 Gear Ratio
    • 8.8" Ring Gear Diameter
    • For Street or Track Use
    • Made in the USA
    • Fits 1999-2004 GT, Bullitt, Mach 1 and Cobra Mustangs
    Improve Off The Line Acceleration. Does your New Edge Mustang spend its days at the track adding a quarter mile at a time to its odometer? If so, you should upgrade to a set of Richmond Excel 4.56 Ring and Pinion Gears. With a much steeper ratio than the factory installed 3.27 gears, these Excel 4.56 Gears are perfect for serious drag racers that are on a quest for faster off the line acceleration and quicker 60 foot times. While 4.56 gears can be used for street applications, they are really intended for drag race use.

    Superior Quality. Richmond proudly manufactures their Ring and Pinion Gear Sets right here in the USA. Using state-of-the-art manufacturing processes and extensive quality control testing, Richmond produces a superior quality Ring and Pinion Gear Set at an excellent price. Richmond is so confident in the quality of their products that they back them with a 6 month, 50,000 mile no-nonsense warranty.

    Recommended Upgrade. Please note that when changing the gear ratio of your Mustangs rear differential that the calibration of your speedometer will no longer be correct and will display the wrong speed. However, you can easily fix this annoying issue with a Ford Racing Speedometer Recalibration Tool (sold separately).

    Application. This 4.56 ratio Richmond Excel Ring and Pinion Gear set will fit all 1999 to 2004 V8 Mustangs equipped with an 8.8" rear end, including the GT, Bullitt, Mach 1 and SVT Cobra models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

    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 as your gears are installed, see drop down option above.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

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

    Approximate RPM for 1999-2004 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 3994 5591        
    2 2180 3051 3923 4795 5667 6539
    3 1406 1969 2531 3094 3656 4219
    4 984 1378 1772 2166 2559 2953
    Will it fit my Mustang?

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    Customer Reviews (1) Write a Review

    Overall Rating 5.0

    out of 5 stars




    • 5/5

      September 19, 2016

      Love these!

      These are great, exactly what i wanted, Had them installed and my car is a total different car! I love them! would definitely recommend these to anyone who is double thinking there self!

      2004Stang

      Year: 2004 Submodel: GT

      Helpful (2)

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