Mustang 2015-2021 IRS Super 8.8 Inch Ring and Pinion Set - 3.55 Ratio

Enhance your Mustang's performance with the Ford Performance 3.55 Ring and Pinion Set, crafted for strength and silence. Made in the USA with OEM quality, these gears deliver a smoother, more powerful drive for 2015-2025 models.

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