Ford Performance Ring And Pinion Gear 3.73 Set 8.8" IRS 2015-2021

Ford Performance:
M-4209-88373A

Highlights

  • For 8.8" Irs Center Section
  • 3.73:1 Gear Ratio
  • Includes OEM Cursh Sleeve
  • OEM Quality
MSRP $249.00
$188.99
You save 24%

Ford Performance 3.73 Ring and Pinion Gear Set for all 2015, 2016, 2017, 2018, 2019, 2020 and 2021 Mustangs with the 8.8" IRS Rear End.

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 & 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 U.S.A.
- Professional Installation is Highly Recommended

Please Note: Requires M4210B3, the 2015-2021 Ford Performance 8.8” IRS Ring & Pinion Installation Kit

*Will NOT fit earlier 8.8-inch straight axles found in previous generations.
*Will NOT fit 2015-2021 Mustangs originally equipped with a rear-end housing with factory installed 3.15 gears. 

Tech Tip: After installation of your new FRPP 3.73 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 2015-2017 Mustang.

If you're looking for parts for your 2015-2021 Mustang, you should start by looking at the several Mustang parts that CJ Pony Parts offers from Ford Performance (formerly Ford Racing). By buying your Ford Performance parts from CJ Pony Parts, you know you're getting your Mustang parts from a reliable, reputable dealer, since CJ Pony Parts is a Top 10 Ford Performance Dealer and has been for the last 10 years. When you buy your Ford Performance Mustang parts from CJ Pony Parts, you know you have a winning combination.

California Residents: Proposition 65 Warning

Installation Videos

Video Transcript

We’re here with Ford Racing's 3.73 Ring and Pinion set fitting your 2015 Mustang.

Changing to numerically higher rear gears has always been a great way to add acceleration to your Mustang. This ring and pinion set from Ford Racing is specifically designed for the IRS found on the 2015 Mustang, and will not work on a solid axle. It includes a new ring gear, new pinion, new crush sleeve, and a new bolt.

This 3.73 ring and pinion set from Ford Racing is a great way to increase the acceleration on your 2015 Mustang. Other ratios are also available.

Vehicle Fitment

This product will fit the following Mustang years:

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