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Ford Performance IRS Ring and Pinion Gear Kit; 3.55 Gear Ratio (15-20 All)

Item 384402
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

      • Ford Racing Quality
      • Strong Forged Construction
      • 3.55 Gear Ratio
      • 8.8" Ring Gear Diameter
      • For Street or Track Use
      • Fits 2015-2020 Mustangs Equipped with IRS

      Description

      Upgrade OEM Gears. Are you looking to upgrade to a stronger set of rear gears? Then look no further than installing a set of genuine Ford Racing Gears in your 2015-2020 S550 Pony. Ford Racing Ring and Pinion Gears are perfect for street, road, and race applications.

      Superior Quality. Manufactured in the USA, these Ford Racing Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and are completed in 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 Mustang Handheld Tuner is a quick and easy way to fix this issue.

      Application.
      This 3.55:1 Ratio Ford Racing Ring and Pinion Gear set will fit all 2015-2020 Mustangs equipped with an 8.8" Independent Rear Suspension (IRS), including V6, EcoBoost and GT models. A master bearing kit is recommended by most installers, especially on high mileage vehicles.

      Application Note. These Ford Racing 3.55 gears are not compatible with a 3.15 ratio differential - use differential M-4204-MT or M-4204-M.

      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.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      Ford Performance M-4209-88355A

      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

      4.9

      Customer Reviews (100+)

        Reviews of Ford Performance Drivetrain products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 19, 20
          • EcoBoost - 15, 16, 17, 18, 19, 20
          • GT - 15, 16, 17, 18, 19, 20
          • GT350 - 15, 16, 17, 18, 19, 20
          • GT350R - 15, 16, 17, 18, 19, 20
          • GT500 - 20
          • V6 - 15, 16, 17

          These 3.55 gears are not compatible with a 3.15 ratio differential - use differential M-4204-MT or M-4204-M.

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