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EXCEL from Richmond 4.56 Gears (86-93 GT)

Market Price $179.99 You Save 11% ($20.00)
Our Price

$159.99

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  • Item 21529G87
  • 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 1986-1993 GT, 5.0 LX and SVT Cobra
Improve Off The Line Acceleration. Is your 1986-1993 5.0L Fox Body Mustang only driven a quarter mile at a time? If you answered yes a set of Richmond Excel 4.56 Ring and Pinion Gears are probably in your future. Featuring a much steeper ratio than the factory installed 3.08 or 3.27 gears, these Excel 4.56 Gears are ideal for serious drag racers that are looking for faster acceleration and quicker 60 foot times. While 4.56 gears can be used on the street they are really intended for drag race applications.

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 new Speedometer Gear (sold separately).

Application. This 4.56 ratio Richmond Excel Ring and Pinion Gear set will fit all 1986 to 1993 V8 Mustangs equipped with an 8.8" solid axle rear end, including the GT, 5.0 LX, 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: 1986 1987 1988 1989 1990 1991 1992 1993 Details

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

Approximate RPM for 1986-1993 GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4739 6635        
2 2798 3918 5037 6156    
3 1870 2618 3366 4115 4863 5611
4 1406 1969 2531 3094 3656 4219
5 942 1319 1696 2073 2450 2826


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3375 4725 6075      
2 2062 2887 3712 4537 5362 6187
3 1406 1969 2531 3094 3656 4219
4 937 1312 1687 2062 2437 2812
Will it fit my Mustang?
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

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