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EXCEL from Richmond Ring and Pinion Gear Kit; 3.55 Gear Ratio (05-09 GT, GT500)

Item 21525G05
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$164.95

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      Product Information

      Features, Description, Specs & Installation

      Features

      • Superior Quality
      • 3.55:1 Gear Ratio
      • 8.8" Ring Gear Diameter
      • For Street or Track Use
      • Made in the USA
      • Fits 2005-2009 GT, Bullitt and Shelby GT500 Mustangs

      Description

      Improve Off The Line Acceleration. Give your rear wheel drive V8 powered S197 Mustang more grunt off the starting line by replacing your lower ratio factory installed ring and pinion gears. Upgrading to a set of steeper gears will get your Pony into its power band much quicker for improved low end torque and faster acceleration times. A set of Richmond Excel 3.55 Ring and Pinion Gears are a great choice for daily drivers who are concerned about fuel economy while still wanting better driving performance.

      Superior Quality. Richmond proudly manufactures their Ring and Pinion Gear Sets right here in the USA. Using state-of-the-art manufacturing processes and extensive quality control testing, Richmond produces a superior quality Ring and Pinion Gear Set at an excellent price. Richmond is so confident in the quality of their products that they back them with a 6 month, 50,000 mile no-nonsense warranty.

      Recommended Upgrade. Please note that when changing the gear ratio of your Mustangs rear differential that the calibration of your speedometer will no longer be correct and will display the wrong speed. However, you can easily fix this annoying issue with a Ford Racing Speedometer Recalibration Tool (sold separately).

      Application. This 3.55 ratio Richmond Excel Ring and Pinion Gear set will fit all 2005 to 2009 V8 Mustangs equipped with an 8.8" solid axle rear end, including the GT, Bullitt and Shelby GT500 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. 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: 2005 2006 2007 2008 2009 Details

      EXCEL from Richmond F88355

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Ring gear
      • (1) Pinion gear

      Tech Specs

      Approximate RPM for 2005-2009 GT


      Manual
      Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1 3700 5180 6660      
      2 2190 3065 3941 4817 5693 6569
      3 1445 2023 2601 3179 3757 4335
      4 1095 1533 1971 2408 2846 3284
      5 744 1042 1340 1638 1936 2233


      Automatic
      Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
      1 3525 4935 6345      
      2 2507 3510 4513 5515 6518  
      3 1686 2360 3035 3709 4383 5058
      4 1095 1533 1971 2408 2846 3284
      5 777 1088 1399 1710 2021 2332
      4.0

      Customer Reviews (85)

        Reviews of EXCEL from Richmond Drivetrain products have an average rating of 4.0 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 08, 09
          • GT - 05, 06, 07, 08, 09
          • GT500 - 07, 08, 09

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