Unleash the true potential of your vehicle with Function Factory Performance’s Ford Performance 8.8-inch Ring Gear and Pinion Set. Engineered with precision by Ford, this 3.55 ratio set is crafted for those seeking enhanced drive quality and performance. Whether hitting the track or cruising the open road, this gear and pinion combo promises a smoother, more efficient power transfer, optimizing your vehicle’s torque and speed. Built to last, it’s constructed using top-notch materials that meet rigorous driving conditions. Upgrade your ride’s responsiveness and feel the difference on every drive with this expertly designed gear set from Function Factory Performance.
- Loaded differential housing for Mustang IRS
- Fits 2018-2024 Mustang
- Fits 2015-2017 Mustang (see technical notes below)
- Iron housing with aluminum cover
- Includes 3.55:1 ratio gear set M-4209-88355A and Traction-Lok differential M-4204-M
- Custom calibration is required for speedometer and shift corrections
- Original Equipment on 2019 Mustang GT
- Note-on 2015-2017 Mustang: a pinion flange change may be necessary; it comes with a pinion flange with a 93mm bolt circle and a 110mm driveshaft pilot installed. For applications that require a 95mm bolt circle and 113mm driveshaft pilot, use the FR3Z-4851-B pinion flange, available through Ford Dealer.
- SKU: M-4001-88355B
We’ve got your back!
Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and awesome, so without hesitation give us a call at (480) 576-8606, feel free to direct message on our live chat or CLICK HERE to contact us via email.