Ford Performance Ring And Pinion Gear 4.09 Set 8.8" IRS 2015-2022

Are you looking for a cheap and easy way to modify the Rear Axle of your 2015-2022 S550 Mustang? If so you might be interested in this 4.09 Ring and Pinion Gear Set from Ford Performance. This Ford Performance 4.09 Ring and Pinion Gear Set will accelerate quicker at a higher top speed, with this set from Ford Performance, you’ll have the correct high-quality parts to take full control over your 2015+ Mustang.

Features and Benefits:
- Strong Unmatched Forged Construction and Quality
- Quiet Worry-Free Performance
- Corrosion-Resistant Black Oxide Finish
- Perfect for Street or Track Use
- Proudly Made in the USA!
- Professional Installation is Highly Recommended

*Will not fit earlier 8.8-inch straight axles found in previous generations.
*Will not fit 2015+ Mustangs originally equipped with a rear-end housing with factory installed 3.15 gears.

Please Note: Requires M4210B3, the S550 Ford Performance 8.8” IRS Ring & Pinion Installation Kit

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+ Mustang. Calibration support for 2022+ Mustangs is NOT available at this time.

The Ford Performance 4.09 Ring and Pinion Gear Set is 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. The Ford Performance Ring and Pinion Gear is the choice of championship road racing and drag racing teams around the world. The Ring and Pinion Gear features a superior surface finish that is hardened for the strongest and quietest performance on the market.