Ford Performance 8.8" 3.55:1 IRS Mustang Ring Gear and Pinion Set (2015-2020)

2 Review(s)
$26.00 (12%)
Part Number: 161 M 4209 88355A
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Take your 2015 Mustang to the next level with a Ford Racing IRS Ring and Pinion Set.

The 8.8" rear end has been the standard in performance since its introduction in the Mustang in 1986 and Ford Racing is the manufacturer of choice when it's time to performance build your axle.

Ford Racing's superior surface finish, hardening, and manufacturing consistency provide the strongest and quietest 8.8" gears in the market.

When you're purchasing a new 8.8" gear set make sure your bearings and shims are up to the task with Ford Racing's High Performance Installation Kits.

Note: If you have a OE 3.15 differential you must also upgrade your differential to 161-M-4204-MT or 161-M-4204-M in order to properly install these gears.

Product Benefits
  • Proven Performance
  • Ford Racing Quality
  • Made in the USA

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: Ford Performance

Installation Information:

Level of Difficulty: Tech Recommended
Install Time: About 4 Hours
Tools Required: Basic Shop Tools

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018, 2019, 2020

Customer Reviews

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Average Customer Ratings


Great upgrade
These 3.55's are a great upgrade from stock and are great on mpg!
Did you find this helpful?  0 of 1 Found Helpful
from Oklahoma on 7/17/2016
DD Pony
Felt more acceleration right away. Perfect upgrade for my daily driver.
Did you find this helpful?  0 of 1 Found Helpful
from Texas on 11/3/2015
There are no reviews for this product!

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