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USA Standard 3.55 Gears (99-04 GT)

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$149.99

  • Item #21613G99
  • MPN# ZG F8.8-355

  • Market Price $169.99
  • You Save 12% ($20.00)
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Features
  • USA Standard Gear
  • Manufactured from 8620 gear steel
  • 3.55 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 3700 5180 6660      
2 2190 3065 3941 4817 5693 6569
3 1445 2023 2601 3179 3757 4335
4 1095 1533 1971 2408 2846 3284
5 744 1042 1340 1638 1936 2233


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3109 4353 5596 6840    
2 1697 2376 3054 3733 4412 5091
3 1095 1533 1971 2408 2846 3284
4 766 1073 1379 1686 1992 2299
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 99, 01, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

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