Richmond Excel by 3.90 Gears (99-04 GT)

Richmond Excel by 3.90 Gears (99-04 GT)
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OUR PRICE$159.99
Market Price $179.99You Save 11% ($20.00)
Item # 21527G99
Add Gear Install Kit
Add Traction-LOK Rebuild Kit w/ Carbon Discs
PRICE WITH OPTIONS $159.99
AmericanMuscle no longer carries the Richmond Excel by 3.90 Gears (99-04 GT). Please check out 99-04 Mustang Gears for an updated selection.
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Product Features

  • Better than OEM quality
  • 3.90 Gear Ratio
  • 8.8" Ring Gear Diameter
  • Fits 1999-2004 GT, Bullitt, Mach 1 and Cobra Mustangs
  • Made in the USA
Improves Off The Line Bite. Are you looking to install a steeper set of gears in your Pony to get more low end grunt off the line? Then look no further than a set of Richmond gears. Richmond has been making high quality gears at a friendly price for well over 80 years.

Made in the USA. Manufactured right here in the USA, Richmond uses state-of-the-art manufacturing and extensive testing to produce a superior quality ring and pinion gear set at an excellent price.

Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a Ford Racing Speedometer Recalibration Tool is an inexpensive way to fix this issue.

Application. This Richmond 3.90 Ring and Pinion Gear set will fit all 1999 to 2004 V8 Mustangs including the GT, Bullitt, Mach 1 and 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.

Approximate RPM for 1999-2004 GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4065 5691        
2 2405 3368 4330 5292 6254  
3 1588 2223 2858 3493 4128 4763
4 1203 1684 2165 2646 3127 3608
5 818 1145 1472 1799 2126 2453


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3416 4782 6148      
2 1864 2610 3355 4101 4847 5592
3 1203 1684 2165 2646 3127 3608
4 842 1179 1515 1852 2189 2526

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

Installation Guides:

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Fitment:
  • GT 99, 00, 01, 02, 03, 04
  • Cobra 99, 01, 03, 04
  • Mach 1 03, 04
  • Bullitt 01

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