Installation Time
(approx) 4 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
FREE 1 to 3-Day Delivery on Orders $149+ Details
$1,430.89 kit
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Features, Description, Q&A, Specs & Installation
| Brand | USA Standard Gear |
| Gear Type | Gear Kits |
| Gear Ratio | 3.73 |
Precision Gear Kit. The USA Standard Gear 8.8-Inch Posi Rear Axle Ring and Pinion Gear Kit with Install Kit and 3.73 Gear Ratio is designed to replace or upgrade the rear differential gears. This kit improves vehicle performance by enhancing traction and power delivery, especially in demanding driving conditions. It is essential for restoring optimal drivetrain function or making gearing adjustments.
Construction and Appearance. This kit features durable ring and pinion gears manufactured to precise specifications for a perfect fit. It includes a limited slip posi carrier with 31 splines and premium 2.53-inch OD axle bearings, all engineered for long-lasting reliability and smooth operation.
Installation. Installation requires moderate mechanical skill and standard tools, with no special drilling or modifications necessary. The master install kit provides all necessary components for a streamlined installation process.
Application. Specifically fits 2005 to 2010 Mustang GT and GT500 models without exclusions for this time frame or generation.
USA Standard Gear ZGK2039
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 4 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
What's in the Box