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USA Standard 4.10 Gears (86-93 GT)

AmericanMuscle no longer carries the USA Standard 4.10 Gears (86-93 GT). Please check out 1979-1993 Foxbody Mustang Gears for an updated selection.
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$149.99

  • Item #21616G87
  • Market Price $169.99
  • You Save 12% ($20.00)
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AmericanMuscle no longer carries the USA Standard 4.10 Gears (86-93 GT). Please check out 1979-1993 Foxbody Mustang Gears for an updated selection.

Features
  • USA Standard Gear
  • Manufactured from 8620 gear steel
  • 4.10 gear ratio
  • 8.8" ring gear diameter
  • Fits 1986-1993 LX 5.0, GT, and SVT Cobra Mustangs
Description
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.

Mustang Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

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 4261 5965        
2 2516 3523 4529 5535 6542  
3 1682 2354 3027 3700 4372 5045
4 1264 1770 2276 2782 3287 3793
5 847 1186 1525 1864 2203 2541


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3034 4248 5462 6676    
2 1854 2596 3338 4080 4821 5563
3 1264 1770 2276 2782 3287 3793
4 843 1180 1517 1854 2192 2529
Fitment
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93

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Installation Time:Afternoon

  • Performance Gain: 1 1/5
  • Fit: 1 1/5
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  • 1/5

    dont buy

    August 01, 2012

    these gears are poorly made. i had to grind the pinion gear shaft near the splines so it will slide threw the outer bearing close to the pinion seal.then after i tightned it up it was super tight. buy the ford racing gears that are made from ford that fit the best. i tried to save money and its ending up costing me more. cause now im buying ford racing gears and throwing these things away

    bnuts677

    Year: 1987 Model: Other Driving Style: Race 'Stangs I have owned: 3 Edgewater, MD, USA

    Helpful (2) (0)

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