USA Standard 4.56 Gears (05-09 GT)

USA Standard 4.56 Gears (05-09 GT)
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OUR PRICE$149.99
Yukon Gears and Axles
Item # 21617G05
Market Price $169.99You Save 12% ($20.00)
AmericanMuscle no longer carries the USA Standard 4.56 Gears (05-09 GT). Please check out 05-09 Mustang Gears for an updated selection.

Product Features

  • USA Standard Gear
  • Manufactured from 8620 gear steel
  • 4.56 gear ratio
  • 8.8" ring gear diameter
  • Fits 2005-2009 GT, Bullitt, and Shelby GT500 Mustangs

RECOMMENDED WITH THIS PRODUCT

$149.99
Add Gear Install Kit
$89.99
Add Traction-LOK Rebuild Kit w/ Carbon Discs
$102.59
Add 2010 8.8in Rear Gear Pinion Bearing
$59.99
Total Price: $149.99
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 4.56 Ring and Pinion Gear set will fit all 2005 to 2010 V8 Mustangs including the GT, Bullitt and GT500 models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

Attention 2010 and newer Mustang Owners. Starting in 2010 Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this you will require a new 8.8" rear gear pinion bearing (Ford part# 9L3Z-4630-A) for proper installation, please 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.

Approximate RPM for 2005-2010 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 4528 6339        
2 3220 4508 5796      
3 2166 3032 3898 4764 5630 6497
4 1406 1969 2531 3094 3656 4219
5 998 1398 1797 2197 2596 2995

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

What's in the box?

  • (1) Ring gear
  • (1) Pinion gear

Installation Guides:

What's in the box?

  • (1) Ring gear
  • (1) Pinion gear
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Fitment:
  • GT 05, 06, 07, 08, 09
  • GT500 07, 08, 09
  • Bullitt 08, 09

About USA Standard

Yukon Gears and Axles
Yukon Gear and Axle build quality parts that exceed expectation, it’s that simple! Yukons in-house engineering team utilizes state-of-the-art computer software to design expectational products that are manufactured in partnership with some of the world’s foremost leaders in OEM manufacturing. Only after rigorous testing and intense quality control inspection can it earn the name Yukon.

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