Ford Racing 8.8-inch Ring and Pinion Set — 3.73 Ratio for 2015+ Mustang

SKU: FRPM-4209-88373A
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Ford Racing

Ford Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Ford Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ford Racing 8.8-inch Ring and Pinion: Mustang Performance Upgrade

Transform the acceleration and responsiveness of your 2015-2024 Ford Mustang with the Ford Racing 8.8-inch 3.73 Ring and Pinion set. These gears are precision-engineered to handle the power of the modern Mustang, providing improved off-the-line performance and a more aggressive driving experience. Finished with a durable black oxide coating, these gears are built to resist corrosion and handle the stresses of high-performance driving.

Why Upgrade Your Mustang Gears?

  • Optimized Ratio: The 3.73 ratio is the perfect upgrade for street and track performance.
  • Direct Fit: Specifically designed for the 2015+ Ford Mustang 8.8-inch differential.
  • Corrosion Resistant: Black oxide finish ensures longevity.
  • Race-Proven Quality: Manufactured by Ford Racing for maximum reliability.
  • Enhanced Acceleration: Feel the difference in every gear shift.

Technical Note: These gears are intended for competition use. Ensure your differential carrier is compatible with the 3.73 ratio (refer to M-4204-MT or M-4204-M). Please verify local regulations regarding emissions and road use before installation. For the best selection of Mustang performance parts, look no further than GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Ford Mustang GT 50 Years Limited Edition
2015-2017 Ford Mustang V6
2015-2018 Ford Mustang EcoBoost
2015-2018 Ford Mustang EcoBoost Premium
2015-2018 Ford Mustang GT
2015-2018 Ford Mustang GT Premium
2015-2018 Ford Mustang Shelby GT350

Product Details

Product Description
Part Numbers
Sizing & Fit

About Ford Racing

Ford Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Ford Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ford Racing 8.8-inch Ring and Pinion: Mustang Performance Upgrade

Transform the acceleration and responsiveness of your 2015-2024 Ford Mustang with the Ford Racing 8.8-inch 3.73 Ring and Pinion set. These gears are precision-engineered to handle the power of the modern Mustang, providing improved off-the-line performance and a more aggressive driving experience. Finished with a durable black oxide coating, these gears are built to resist corrosion and handle the stresses of high-performance driving.

Why Upgrade Your Mustang Gears?

  • Optimized Ratio: The 3.73 ratio is the perfect upgrade for street and track performance.
  • Direct Fit: Specifically designed for the 2015+ Ford Mustang 8.8-inch differential.
  • Corrosion Resistant: Black oxide finish ensures longevity.
  • Race-Proven Quality: Manufactured by Ford Racing for maximum reliability.
  • Enhanced Acceleration: Feel the difference in every gear shift.

Technical Note: These gears are intended for competition use. Ensure your differential carrier is compatible with the 3.73 ratio (refer to M-4204-MT or M-4204-M). Please verify local regulations regarding emissions and road use before installation. For the best selection of Mustang performance parts, look no further than GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Ford Mustang GT 50 Years Limited Edition
2015-2017 Ford Mustang V6
2015-2018 Ford Mustang EcoBoost
2015-2018 Ford Mustang EcoBoost Premium
2015-2018 Ford Mustang GT
2015-2018 Ford Mustang GT Premium
2015-2018 Ford Mustang Shelby GT350

Product Details

Product Description

About Ford Racing

Ford Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Ford Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ford Racing 8.8-inch Ring and Pinion: Mustang Performance Upgrade

Transform the acceleration and responsiveness of your 2015-2024 Ford Mustang with the Ford Racing 8.8-inch 3.73 Ring and Pinion set. These gears are precision-engineered to handle the power of the modern Mustang, providing improved off-the-line performance and a more aggressive driving experience. Finished with a durable black oxide coating, these gears are built to resist corrosion and handle the stresses of high-performance driving.

Why Upgrade Your Mustang Gears?

  • Optimized Ratio: The 3.73 ratio is the perfect upgrade for street and track performance.
  • Direct Fit: Specifically designed for the 2015+ Ford Mustang 8.8-inch differential.
  • Corrosion Resistant: Black oxide finish ensures longevity.
  • Race-Proven Quality: Manufactured by Ford Racing for maximum reliability.
  • Enhanced Acceleration: Feel the difference in every gear shift.

Technical Note: These gears are intended for competition use. Ensure your differential carrier is compatible with the 3.73 ratio (refer to M-4204-MT or M-4204-M). Please verify local regulations regarding emissions and road use before installation. For the best selection of Mustang performance parts, look no further than GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Ford Mustang GT 50 Years Limited Edition
2015-2017 Ford Mustang V6
2015-2018 Ford Mustang EcoBoost
2015-2018 Ford Mustang EcoBoost Premium
2015-2018 Ford Mustang GT
2015-2018 Ford Mustang GT Premium
2015-2018 Ford Mustang Shelby GT350

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