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Ring Gear and Pinion Kit - 3.55 Gears (86-93 GT)

Market Price $203.96 You Save 12% ($23.46)
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$180.50

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  • Item 21613G87

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Ship to: Ashburn - 20149
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    Features & Details

    • USA Standard Gear
    • Manufactured from 8620 Gear Steel
    • 3.55 Gear Ratio
    • 8.8" Ring Gear Diameter
    • Fits 1986-1993 LX 5.0, GT, and SVT Cobra Mustangs
    Wake Up Your Pony. Installing a set of steeper gears is a great way to get your Mustang into the power band quicker for improved low end torque and faster acceleration off the line. A set of USA Standard Gears will really wake up your Pony.

    Better Than OEM Quality. Using state-of-of-the-art equipment and manufacturing techniques USA Standard Ring & Pinion sets are made to higher than OEM standards from high grade 8620 gear steel and are backed by a one year warranty.

    Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a new Speedometer Gear is an inexpensive way to fix this issue.

    Application. This USA Standard Gear Ring and Pinion Gear set will fit all 1986 to 1993 V8 Mustangs including the GT, 5.0 LX and Cobra models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

    Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations.

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Ring gear
    • (1) Pinion gear
    Installation Info
    Tech Specs

    Approximate RPM for 1986-1993 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3689 5165 6641      
    2 2179 3050 3921 4793 5664 6536
    3 1456 2038 2621 3203 3786 4368
    4 1095 1533 1971 2408 2846 3284
    5 733 1027 1320 1614 1907 2200


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 2627 3678 4729 5780 6831  
    2 1606 2248 2890 3532 4175 4817
    3 1095 1533 1971 2408 2846 3284
    4 730 1022 1314 1606 1898 2190
    Will it fit my Mustang?

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    Customer Reviews (2) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Shop Install

    Installation Cost:$250-$500

    • Bang For Your Buck 5 5



    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 14, 2018

      Very Satisfied

      I received my 3.55 gears within a week of ordering them. I was very satisfied with the shipping, the guality and have had no issues since installing them.

      MarcN

      Year: 1988 Submodel: LX

      Helpful (4)

    • 5/5

      December 11, 2014

      Great product

      Great product. It took awhile to install but once it was on you can feel the difference at a dead stop launch.

      Erikkk30

      Year: 1988 Submodel: GT San Benito, TX, USA

      Helpful (5)

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