The Yukon Gear & Axle YA FMUST-2-31 axle kit is designed for 1979-1993 Ford Mustang models equipped with a Ford 8.8-inch rear axle. This complete replacement and performance upgrade package includes two 31-spline axles and a Dura Grip Positraction differential, providing dependable power transfer for street driving, off-road use, and track applications. Yukon Gear & Axle uses high-quality alloys and advanced heat-treating processes to deliver axle components engineered for strength and durability beyond typical stock replacements.
The kit includes the major components needed for a comprehensive rear axle installation or rebuild. Along with the Dura Grip Positraction unit and two 5-lug axles, it includes carrier bearings and races, carrier shims, axle bearings, axle seals, studs, and a Supershim kit. These components help support proper differential operation, bearing alignment, and reliable axle retention when servicing the rear end.
Designed specifically for the Ford 8.8-inch axle housing in 1979-1993 Mustangs, the Yukon Gear & Axle YA FMUST-2-31 offers a convenient solution for upgrading from factory components. The 31-spline configuration is suited for performance-oriented applications that require increased drivetrain strength, while the 5-lug axle design supports common Mustang wheel conversions and replacement needs. Verify the vehicle’s axle housing, spline count, and intended application before installation to ensure compatibility.
Features:





