Free Horsepower: Win a C&L Cold Air Intake & Bama Performance Tuner Enter to Win
1-888-332-7930 M-F 9-9 EST, Sat 9-5:30 EST

Free Shipping on Everything. Seriously. Details

USA Standard 3.73 Gears (99-04 GT)

AmericanMuscle no longer carries the USA Standard 3.73 Gears (99-04 GT). Please check out 1999-2004 Mustang Gears for an updated selection.
1 Reviews
Our Price

$149.99

  • Item #21614G99
  • Market Price $169.99
  • You Save 12% ($20.00)
Free Shipping on Everything

AmericanMuscle no longer carries the USA Standard 3.73 Gears (99-04 GT). Please check out 1999-2004 Mustang Gears for an updated selection.

Features
  • USA Standard Gear
  • Manufactured from 8620 gear steel
  • 3.73 gear ratio
  • 8.8" ring gear diameter
  • Fits 1999-2004 GT, Bullitt, Mach 1, and SVT Cobra Mustangs
Description
Wake Up Your Pony. Installing a set of steeper gears is a great way to get your Mustang into the power band quicker for improved low end torque and faster acceleration off the line. A set of USA Standard Gears will really wake up your Pony. Better Than OEM Quality. Using state-of-of-the-art equipment and manufacturing techniques USA Standard Ring & Pinion sets are made to higher than OEM standards from high grade 8620 gear steel and are backed by a one year warranty.

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 USA Standard Gear 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.

Mustang 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 3888 5443 6998      
2 2301 3221 4141 5061 5981 6902
3 1518 2126 2733 3340 3948 4555
4 1150 1610 2070 2531 2991 3451
5 782 1095 1480 1721 2034 2347


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3267 4573 5880      
2 1783 2496 3209 3922 4636 5349
3 1150 1610 2070 2531 2991 3451
4 805 1127 1449 1771 2093 2416
Fitment
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 99, 01, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

Customer Photos

You Might Also Like

Q & A

No questions about this product yet.

Ask the First Question

Reviews (1) Write a Review

  • 5 Stars 1.0 100%
  • 4 Stars 0 0%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
5.0

out of 5 stars

1 Customer Recommends this Product

Installation Time:Less than 1 Hour

  • Performance Gain: 5 5/5
  • Fit: 5 5/5
  • Bang For Your Buck: 5 5/5
Filter By Sort By
  • 5/5

    exellent product

    September 21, 2012

    I have a 01 mustang gt, change gears by 3.73 and you feel a big difference, I recommend

    Rulaz213

    Year: 1999 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2

    Helpful (0) (1)

More Products You Might Like

Related Categories