
Specifications
- Brand
- Yukon Gear & Axle
- Part #
- YA FMUST-1-31
- UPC
- 883584215554

Yukon Gear 79-93 Mustang Axle Kit / 31 Spline / 4 Lug Axles w/ Duragrip Positraction
$988.89
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Fits 1979-1993 Ford Mustang. Yukon Gear & Axle 31-spline axle kit with DuraGrip Positraction for improved traction.
Key Features
- Fits 1979-1993 Ford Mustang.
- Includes Yukon's DuraGrip Positraction limited-slip differential for improved traction.
- Features 31-spline axles, a stronger option for performance applications.
- Designed for the Ford 8.8-inch rear axle with a C-clip conversion.
- Comes complete with two axles, carrier bearings and races, carrier shims, axle bearings and seals, and studs.
- Utilizes high-quality alloys and heat-treating technologies for durability.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This is the Yukon Gear & Axle 31-spline axle kit designed specifically for the 1979-1993 Ford Mustang. If you're looking to upgrade the rear axle assembly on your Fox Body Mustang, this kit offers a significant improvement over stock, especially if you're dealing with increased power or want better traction off the line. It includes everything needed to convert to a stronger 31-spline setup with a limited-slip differential.
At the heart of this kit is the DuraGrip Positraction unit, which provides limited-slip capability. This means that when you're accelerating, power is distributed more evenly between the rear wheels, helping to prevent wheelspin and put more torque to the ground. The axles themselves are 31-spline, which is a stronger configuration than many stock setups, making them better suited for higher horsepower applications or demanding driving conditions like drag racing or spirited street driving. This kit is designed for the Ford 8.8-inch rear axle and includes the necessary components for a complete installation, including the axles, carrier bearings and races, carrier shims, axle bearings and seals, and studs.
When installing this kit, you'll be working with the Ford 8.8-inch rear end. The kit is designed as a C-clip conversion, meaning it replaces the factory C-clip setup with a more robust axle bearing and seal arrangement. This is a common upgrade for Mustangs of this era, especially when building a performance-oriented vehicle. Ensure you have the proper tools and a service manual for the Ford 8.8-inch rear axle to complete the installation correctly.
Specifications
- Brand
- Yukon Gear & Axle
- Manufacturer Part #
- YA FMUST-1-31
- UPC
- 883584215554
Frequently Asked Questions
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Yukon Gear 79-93 Mustang Axle Kit / 31 Spline / 4 Lug Axles w/ Duragrip Positraction
