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Richmond 8.8 in. 3.55 Gears (10-14 GT)

Market Price $258.51 You Save 9% ($23.50)
Our Price

$235.01

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  • Item 66502G11
  • MPN# 66502G11

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Features & Details

  • Exceptional Quality
  • Handle Extreme Torque Applications
  • First-Run, Never Recycled Materials
  • 3.55 Gear Ratio
  • 8.8" Ring Gear Diameter
  • 2-Year / 100,000 Mile Warranty
  • Fits 2010-2014 GT Mustangs
Improved Performance. If you feel you're take off from a stop just isn't quick enough, not all hope is lost. Swap out the rear end gears in your 2010-2014 GT for a set of high quality 3.55 Richmond Gears. Crafted to handle extreme torque applications, these ring and pinion gears are a great choice for daily S197 Mustangs that also spend time at the strip.

Superior Quality. Manufactured right in the United States, Richmond Gear uses only the highest standards to produce the highest quality gears in the industry. Inspected and scrutinized to deliver gears with acceptable tolerances, durability and fit, Richmond ensures only the best in machining, finishing and heat treating of their drivetrain components.

Recommended Upgrade. When changing the gear ratio of your Mustang's rear differential, the calibration of your speedometer will no longer be accurate and will display the wrong speed. However, you can easily fix this annoying issue with a Tuner or Recalibration Tool (sold separately).

Attention 2010-2014 Mustang Owners. Starting in 2010, Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this, a new 8.8" Rear Gear Pinion Bearing will be required for proper installation. Please see ordering options above.

Installation Notes. An Installation and Bearing Kit is highly recommended by most installers, especially on high mileage Mustangs. Please see ordering options above.

Warranty. Richmond Gears is so confident in the high quality of their ring and pinions that they are backed by a 2-Year / 100,000 Mile No-Nonsense Warranty.

Application. These Richmond 3.55 Ring and Pinion Gears will fit all 2010 to 2014 GT Mustangs equipped with an 8.8" rear end.

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. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time your gears are installed. See ordering options above.

Fitment: 2010 2011 2012 2013 2014 Details

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

Approximate RPM for 2010-2014 GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4007 5610        
2 2660 3724 4788 5838 6917  
3 1850 2590 3330 4070 4810 5550
4 1445 2023 2601 3179 3757 4335
5 1095 1533 1971 2408 2846 3284
6 712 996 1281 1565 1850 2135


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4566 6393        
2 2562 3586 4611 5636 6660  
3 1665 2331 2997 3663 4329 4995
4 1251 1752 2252 2753 3253 3754
5 949 1329 1708 2088 2468 2847
6 756 1059 1362 1664 1967 2269
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 10, 11, 12, 13, 14

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Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 5 5
  • Fit 5 5



  • 5/5

    Installation Time: Afternoon

    February 13, 2017

    Awesome for boost

    If you're boosted this is a great gear aggressive and still able to let the boots build

    Zachs197

    Year: 2016 Submodel: GT

    Helpful (1)

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