USA Standard 4.10 Gears (86-93 GT)

USA Standard 4.10 Gears (86-93 GT)
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About Yukon Gear

Yukon Gears and Axles
Yukon Gear and Axle build quality parts that exceed expectation, it’s that simple! Yukons in-house engineering team utilizes state-of-the-art computer software to design expectational products ...... READ MORE
OUR PRICE$149.99
Market Price $169.99You Save 12% ($20.00)
Item # 21616G87
Ships same business day

Accessories Options

Add Gear Install Kit

Accessories Options

Add Traction-LOK Rebuild Kit w/ Carbon Discs
PRICE WITH OPTIONS $149.99

Product 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
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.

Approximate RPM for 1986-1993 GT Manual
Gear Speed
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


Approximate RPM for 1986-1993 GT Automatic
Gear Speed
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

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.

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

Customer Submitted Installation Guides:

Differential Gears - Installation Instructions
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Fitment:
  • Foxbody 86, 87, 88, 89, 90, 91, 92, 93

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