2015-23 Mustang Parts
Shop the best 2015-2023 S550 Ford Mustang differential and rear end gears from the best brands in the industry at Late Model Restoration! Know your factory ratio before you order, V6 and EcoBoost models run 3.31, manual GT/GT350/R use 3.73, and other GT trims fall between, check your door tag's AXLE code to confirm yours. Not sure which gear set is right for your build? Our S550 drivetrain specialists can help you choose. To complete your Mustang's drivetrain, be sure to grab a clutch kit and components, along with upgraded half shafts and axles. See our complete 2015-2023 Mustang drivetrain offering for all of the driveline parts needed for your S550!
Upgrading gears is a popular modification for Mustang enthusiasts, and the S550 is no exception. Swapping to performance rear-end gears or an upgraded differential housing delivers quicker acceleration, enhancing overall performance. For boosted S550s, a shorter gear set helps build boost more efficiently, improving power delivery and responsiveness.
What's your factory gear ratio? Every S550 uses the same 8.8" independent rear end, but the factory ratio varies by trim: V6 and EcoBoost run 3.31, Performance Pack and automatic GT models typically run 3.55, and manual GT, GT350, and GT350R run 3.73. Check your door tag's AXLE code to confirm before ordering a gear set, and note that a shorter ratio (like our 4.11 option) trades top speed for quicker acceleration, especially useful on boosted builds.
Not sure how to determine your rear axle ratio, or how to install new gears once you've picked a ratio? See our How To Determine A Mustang's Rear Axle Ratio guide, our full Mustang Rear End Gear Ratio & Axle Guide, or How To Install Mustang Gears for the install process.
Shop related: All 2015-2023 Mustang Drivetrain · Half Shafts · Aluminum Driveshafts · Automatic Transmission · Manual Transmission · Clutch Kits & Components
