JavaScript is currently disabled in your browser

To experience our website's full functionality and interactive features, please enable JavaScript.

How to Enable JavaScript in Common Browsers

Google Chrome

Open Chrome settings.
Go to "Privacy and security" > "Site Settings".
Under "Content", find "JavaScript" and select "Sites can use JavaScript."

Mozilla Firefox

Type 'about:config' in the address bar and press Enter.
Search for javascript.enabled.
Toggle the value to true.

Microsoft Edge

Open Edge settings.
Go to "Cookies and site permissions" > "JavaScript."
Turn on "Allowed (recommended)."

Apple Safari

Go to Safari > Preferences.
Click on the "Security" tab.
Check the box next to "Enable JavaScript."

Mustang 2015-2026 IRS Super 8.8 in. Ring and Pinion Set - 3.55 Ratio

Name: Mustang 2015-2026 IRS Super 8.8 in. Ring and Pinion Set - 3.55 Ratio
Brand: Ford
SKU: M420988355A
Price: 280 USD
Availability: InStock
Rating: 0 (0 reviews)

SKU: M420988355A

About This Item

Fits 2015-2026 Mustang Super 8.8-inch IRS center section

Includes OEM crush sleeve and pinion nut

Requires M-4210-B3 Mustang 8.8-inch ring-gear and pinion install kit

Made in United States in Ford's Sterling Axle Plant

OEM Quality - our superior surface finish, hardening and manufacturing consistency provide the strongest and quietest gears in the market.

Requires aftermarket calibration if vehicle is not originally equipped with this gear ratio

Note: 3.15 ratio differential not compatible with 3.31, 3.55, 3.73 and 4.09 ratio gears. Use differential M-4204-MT or M-4204-M