Ring and pinion sets have proven to be one the most popular modifications for just about any Mustang owner. So much about how your Mustang feels can be controlled by replacing the factory Ring and Pinion Gears in your 2015-2021 Mustang. Whether you’re looking for faster acceleration or a higher top speed, with this set from Ford Performance, you’ll have the correct top quality parts to take full control over your S550.
All Ford Performance (formerly Ford Racing) Ring and Pinion Gear Sets are made in the United States at Ford's Sterling Axle Plant. The lower the ratio (higher the number), the quicker your car will accelerate and you will feel the difference in the "seat of your pants". Ford Performance’s 8.8" gears are the choice of championship road racing and drag racing teams around the world. Featuring OEM quality, a superior surface finish, hardening and strict manufacturing consistency, this gear set will provide you the strongest and quietest performance on the market today!
Features and Benefits:
- Strong Unmatched Forged Construction and Quality
- Quiet Worry-Free Performance
- Corrosion Resistant Black Oxide Finish
- Perfect for Street or Track Use
- Made in the USA
- Professional Installation is Highly Recommended
Please Note: Requires M4210B3, the 2015-2021 Ford Racing 8.8” IRS Ring and Pinion Installation Kit
*Will NOT fit earlier 8.8-inch straight axles found in previous generations.
*Will NOT fit 2015-2020 Mustangs originally equipped with a rear-end housing with factory installed 3.15 gears.
Tech Tip: After installation of your new FRPP 4.09 Ring and Pinion Gear Set, you will need to adjust the rear axle ratio in the body control module in order to re-calibrate your speedometer. This can be adjusted for if you have previously purchased one of the new Ford Performance Power Packs for the 2015-2021 Mustang. Calibration support for 2020-2021 Mustangs is NOT available at this time.