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2015-2023
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2005-2009
1999-2004
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1979-1993
Installation Time
(approx) a Day
Difficulty Level:
Mechanical expertise or professional installation required.
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USA Standard Gear Ring and Pinion Gear Kit; 5.13 Gear Ratio (99-04 Mustang GT)Find parts that fit my vehicle
Item 403008
$0.00
22 Reviews
Our Price
$299.89 kit
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Improved Track Performance
- 5.13 Gear Ratio
- 8.80-in. Ring Gear Diameter
- Pinion Spline Count of 30
- 10 Ring Gear Bolts
- Heavy-Duty 8620 Triple-Alloy Steel Construction
- Installation by a Professional Highly Recommended
- 1-Year Limited Warranty
- Use with Ford 8.8-in. Standard Rotation Axles
- Fits All 1999 to 2004 Ford Mustang GT Models
| Brand | USA Standard Gear |
| Gear Type | Gears |
| Gear Ratio | 5.13 |
Description
Enhance Track Performance. If you can’t quite get the acceleration you need with your current ring and pinion gear set-up, then it’s probably time for an upgrade. The USA Standard Ring 5.13 Ratio Gear and Pinion Kit levels up your Mustang’s torque for faster off-the-line acceleration. The USA Standard Ring 5.13 Ratio Gear and Pinion Kit is the best upgrade for your track-ready Mustang.
Improving Torque. Upgrading your Mustang to ring and pinion gears with a higher ratio, like the USA Standard Ring 5.13 Ratio Gear and Pinion Kit will give your vehicle more available torque which, in turn, makes for faster acceleration. If you regularly take your Ford drag racing, then higher acceleration numbers are exactly what you need. It’s important to remember that while a higher gear ratio does translate to faster acceleration, this is achieved at the expense of fuel economy and top speed.
Heavy-Duty Quality. The USA Standard Ring 5.13 Ratio Gear and Pinion Kit is manufactured from heavy-duty 8620 triple-alloy steel that’s heat-treated, for superior strength. The ring and pinion gears are then precision-machined for a true fit resulting in smooth operation. This heavy-duty construction makes for a really tough gear set that can take the kind of high-pressure driving associated with the track.
Installation by a Professional Highly Recommended. To properly install the USA Standard Ring 5.13 Ratio Gear and Pinion Kit, you’ll need a number of specialized tools and instruments, as well as expert-level mechanical skills. Several hours is also needed for completion. As such, professional installation is highly recommended.
Covered by a 1-Year Limited Warranty. The USA Standard Ring 5.13 Ratio Gear and Pinion Kit is covered by a 1-year limited warranty against any workmanship and material defects. Please visit the manufacturer’s website for more details.
Application. The USA Standard Ring 5.13 Ratio Gear and Pinion Kit fits all 1999 to 2004 Ford Mustang GT models.
Fitment:
- 1999 Ford Mustang
- 2000 Ford Mustang
- 2001 Ford Mustang
- 2002 Ford Mustang
- 2003 Ford Mustang
- 2004 Ford Mustang
USA Standard Gear ZG F8.8-513
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Ring Gear
- (1) Pinion Gear
4.5
Customer Reviews (22)
Questions & Answers
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Will It Fit My Mustang
- Bullitt - 01
- GT - 99, 00, 01, 02, 03, 04
