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2015-2021 Mustang Ford Performance 3.55 Gears by Ford Performance

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Details   |   Reviews
2015-2021 Mustang Ford Performance 3.55 Gears
2015-2021 Mustang Ford Performance 3.55 Gears

A set of Ford Performance 3.55 gears is a great way to get more performance out of your 2015-2021 S550 Mustang!

Item #M420988355A
MPN# M-4209-88355A

Everyday Low Price: $197.99

In Stock
 This item is returnable. Details

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  • Ford Performance Quality
  • Increased Acceleration
  • Made in the USA!
  • Improved Launch


  • Steel Ring & Pinion
  • Heavy Duty Construction
  • Fits 8.8" Mustang Rear End
  • Includes Pinion Nut & Crush Sleeve

 What's in the Box

  • (1) 3.55 Pinion Gear
  • (1) 3.55 Ring Gear
  • (1) Crush Sleeve
  • (1) Pinion Nut

Made in the USA

2015-2021 Mustang Ford Performance 3.55 Gears

Upgrade the rear gears in your S550 with a set of Ford Performance 3.55 gears for your 2015-2021 Mustang. Your factory gears are built to maximize fuel mileage, which leaves much to be desired in the performance department. A gear change can provide a night and day difference when it comes to launching your S550 at the track. While these Ford gears do not increase horsepower, they will definitely allow your Mustang to launch harder and quicker! Ford Performance 8.8" Mustang gears are the choice of championship road racing and drag racing teams around the globe. These IRS rear end gears fit the Ecoboost, V6, and GT models with 8.8" rear ends. Perfect for high horsepower applications and includes a new pinion gear, a ring gear, a crush sleeve, and a pinion nut. Allow your S550 Mustang to accelerate quicker than ever with this 3.55 rear-end gear kit is an excellent choice to get! 

Product Note

  • 3.15 ratio differential not compatible with 3.31, 3.55, and 3.73 ratio gears. Use differential M-4204-MT or M-4204-M


  • Fits 2015-2021 Mustang Ecoboost, V6, & GT

Speedometer Correction
After installation of rear gears, you will need to correct the speedometer. There are different methods to do this depending on year model.

1979-1995 Speedometer Correction - Click Here
1996-Present Speedometer Correction - Click Here

Ford Performance Racing Parts "Packs" and Component Parts Limited Warranty - Click Here
Ford Performance Racing Parts - NO WARRANTY - Click Here
Ford Performance Racing Parts Crate Engine Limited Warranty - Click Here

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

Vehicle Applications

Ford Mustang - 2015 (15) - 2016 (16) - 2017 (17) - 2018 (18) - 2019 (19) - 2020 (20) - 2021 (21)

About This Brand

Ford Performance
Ford Performance - Mustang Ford Racing Parts
Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning.

LMR.com is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at Late Model Restoration. If you want the best for your Mustang or SVT Lightning, look no further than Ford Performance Parts!

Look for Similar Items by Category

2015-2021 Mustang Parts » 2015-2021 Mustang Drivetrain » 2015-2021 Mustang Rear End Gears
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