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Yukon Gear 8.8 Axle Kit - 31 Spline, 4 Lug w/ DuraGrip Positraction (79-93 5.0L)

Market Price $632.25 You Save 12% ($72.74)
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  • Item 393816
  • MPN# 393816

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    Features & Details

    • Yukon Gear Mustang Axle Kit
    • Includes 31 Spline, 4 Lug Axles
    • Includes DuraGrip Positraction Differential
    • High Quality Alloy Construction
    • Heat Treated for Added Durability
    • Includes 1-Year Warranty
    • Fits 1979-1993 5.0L Mustangs
    Upgrade with Dura Grip. If your 5.0's not laying out some nice, even black stripes from both wheels when you burn out, it might be time to invest in an axle rebuild. The Dura Grip Positraction Rear Differential from Yukon Gear is the solution in this kit, incorporating a nodular case with forced 4320 in a heavy-duty construction.

    31 Spline Strength. Upgrading from 28 splines to 31 splines on your axles allows your pony to push out plenty more power to the pavement reliably, without dealing with shredded axle teeth or ruined differentials. This 8.8 Axle Kit includes new 31-spline 4-lug axles that match up great with the included Dura Grip Posi Diff. These axles are constructed from tough 1541H alloy for extra strength.

    What's in The Kit. This kit includes new axle bearings, seals, carrier bearings and races, carrier shims, and the Dura Grip Positraction 31-spline Rear Differential with (2) 31-spline, 4-lug axles.

    Application. This Yukon Gear 8.8 Axle Kit includes new Axles with a Dura Grip Positraction Differential and is specifically designed for 1979-1993 5.0L Mustang models.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 Details

    What's in the Box
    • Axle Bearings
    • Seals
    • Carrier Bearings
    • Races
    • Carrier Shims
    • Dura Grip Positraction Differential 
    • (2) 31-spline, 4-lug axles
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • GT - 87, 88, 89, 90, 91, 92, 93
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Other - 79, 80, 81, 82, 83, 84, 85, 86

    Customer Photos

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    6 Questions / 5 Answers

    Ask a Question

    Gear ration 4.10?


    • The Yukon Gear 8.8 Axle Kit - 31 Spline doe snot include gears.

      Rob D

    Helpful (1)

    gear ration 3.73 ?


    • This Yukon Gear 8.8 Axle Kit - 31 Spline, 4 Lug w/ DuraGrip Positraction would work with Mustangs equipped with a 3.73 gear ratio.


    Helpful (1)

    Does this kit come with the wheel studs or do they need to be purchased separately. Thanks


    • Unfortunately, this kit does not come with wheel studs.


    Helpful (1)

    What wheel studs do I need to use?


    • The Yukon Gear 8.8 Axle Kit can use stock style, or extended length press in wheel studs, depending on your needs.

      Rob D

    Helpful (0)

    How much power is this setup rated for


    • The Yukon Gear 8.8 Axle Kit with DuraGrip Positraction will not have a power rating, as this would be dependent upon a number of factors, such as tire type and size, how hard you are launching, available traction, power and torque, etc. We have seen these used in everything from daily driver Mustangs to dedicated track cars.

      Rob D

    Helpful (0)

    Does it come with the diff pin


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    Customer Reviews (1) Write a Review

    Overall Rating 5.0

    out of 5 stars

    • 5/5

      January 13, 2017

      great design easy install

      These are high quality my friend bough them and they work awesome


      Year: 1979 Submodel: Other

      Helpful (1)

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