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Ford Performance Ring Gear and Pinion Kit - 4.56 Gears (05-09 GT)

AmericanMuscle no longer carries the Ford Performance Ring Gear and Pinion Kit - 4.56 Gears (05-09 GT). Please check out 2005-2009 Mustang Gears for an updated selection.

Features & Details

  • Ford Racing Quality
  • Strong Forged Construction
  • 4.56 Gear Ratio
  • 8.8" Ring Gear Diameter
  • For Street or Track Use
  • Fits 2005-2009 GT, Bullitt and GT500 Mustangs
Improve ET's and low end torque. Are you looking to get more low end grunt off the line and lower ET's at the same time? Then look no further than installing a set of steeper gears in your Pony. Ford Racing Ring and Pinion Gears are perfect for street, road, or race use.

Superior Quality. These Ford Racing 4.56 Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion.

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

Application. This Ford Racing Ring and Pinion Gear set will fit all 2005 to 2010 V8 Mustangs including the GT, Bullitt and GT500 models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

Please Note. Due to the high numeric gear ratio, it will require a notched gear cross pin for proper installation.

Attention 2010 and newer Mustang Owners. Starting in 2010 Ford changed the inner rear gear pinion bearing in all 8.8" equipped Mustangs. Because of this you will require a new 8.8" rear gear pinion bearing (Ford part# 9L3Z-4630-A) for proper installation, please 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. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time as your gears are installed, see drop down option above.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

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

Approximate RPM for 2005-2010 GT

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4753 6654        
2 2812 3937 5062 6187    
3 1856 2599 3341 4084 4826 5569
4 1406 1969 2531 3094 3656 4219
5 956 1339 1721 2104 2486 2869

Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 4528 6339        
2 3220 4508 5796      
3 2166 3032 3898 4764 5630 6497
4 1406 1969 2531 3094 3656 4219
5 998 1398 1797 2197 2596 2995
Will it fit my Mustang?

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      Questions & Answers (1)

      1 Top Rated Question

      I am not finding the Ford Performance 4:56 gear-pinion and install kit available in the gear kit section. Is there such a thing and is it a kit price, or is the install kit with fluids, etc... an additional purchase? Thanks, Brian 2006 GT

      • Unfortunately, we do not have a gear and installation kit package for the 4.56 gears and they would need to be purchased separately.

      Helpful (0)
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        Customer Reviews (1) Write a Review

        Overall Rating 5

        out of 5 stars

        Installation Time:Shop Install

        Installation Cost:$250-$500

        • Performance Gain 5 5
        • Fit 5 5

        • 5/5

          Installation Time: Shop Install

          Installation Cost: $250-$500

          November 11, 2014

          Contemplating 4.56 or 4.10 gears?

          As they say, don't fear the gear! Yes, they're better suited for the track but driving around town is easy. Cruising on the highway isn't bad. I hover around 3K RPMs if cruising just under 80mph. It's like having a 6-speed but staying in 5th gear. I think the key ingredient for 4.56 gears are taller rear tires. I'm running 295/45/18s (28.4" tall) and it works well. If you have plans for taller tires, go for taller gears. Hope this helps!


          Year: 2005 Submodel: GT Southeastern, MA

          Helpful (21)

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