Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set

SKU: RGAF9-389
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Sale price$272.99
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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 Revolution Gear & Axle

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

Watch in action

Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set

Unleash aggressive acceleration and enhanced torque with the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set. Engineered for the legendary Ford 9-inch differential, this 3.89 gear ratio is favored by performance enthusiasts seeking a significant boost in off-the-line power. It's an ideal upgrade for vehicles with larger tires or those built for demanding off-road conditions and competitive use, providing the torque multiplication needed to overcome obstacles and accelerate rapidly.

Key Features:

  • Ford 9in Specific: Precision-fit for Ford 9-inch axle assemblies.
  • Aggressive Gear Ratio: 3.89:1, delivering maximum torque and improved acceleration.
  • Durable Construction: Manufactured from high-quality, hardened steel for extreme strength.
  • Quiet Operation: Advanced tooth design and manufacturing for reduced noise.
  • Performance Focus: Perfect for off-road, racing, or modified street applications.
  • Installation Ready: Designed for a precise fit, simplifying the installation process.

Revolution Gear & Axle is a trusted name, delivering robust and reliable drivetrain components. This 3.89 ratio set is built to endure the stresses of high-performance driving. It's an excellent choice for restoring or enhancing the performance of classic Fords or custom builds. By installing this gear set, you can significantly improve your vehicle's ability to launch quickly and power through challenging terrain. Proper gear pattern setup during installation is crucial for optimal performance and longevity.

Boost your vehicle's power. Order the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set from GGCRACING now!

Product Details

Product Description
Part Numbers
Sizing & Fit

About Revolution Gear & Axle

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

Watch in action

Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set

Unleash aggressive acceleration and enhanced torque with the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set. Engineered for the legendary Ford 9-inch differential, this 3.89 gear ratio is favored by performance enthusiasts seeking a significant boost in off-the-line power. It's an ideal upgrade for vehicles with larger tires or those built for demanding off-road conditions and competitive use, providing the torque multiplication needed to overcome obstacles and accelerate rapidly.

Key Features:

  • Ford 9in Specific: Precision-fit for Ford 9-inch axle assemblies.
  • Aggressive Gear Ratio: 3.89:1, delivering maximum torque and improved acceleration.
  • Durable Construction: Manufactured from high-quality, hardened steel for extreme strength.
  • Quiet Operation: Advanced tooth design and manufacturing for reduced noise.
  • Performance Focus: Perfect for off-road, racing, or modified street applications.
  • Installation Ready: Designed for a precise fit, simplifying the installation process.

Revolution Gear & Axle is a trusted name, delivering robust and reliable drivetrain components. This 3.89 ratio set is built to endure the stresses of high-performance driving. It's an excellent choice for restoring or enhancing the performance of classic Fords or custom builds. By installing this gear set, you can significantly improve your vehicle's ability to launch quickly and power through challenging terrain. Proper gear pattern setup during installation is crucial for optimal performance and longevity.

Boost your vehicle's power. Order the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set from GGCRACING now!

Product Details

Product Description

About Revolution Gear & Axle

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

Watch in action

Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set

Unleash aggressive acceleration and enhanced torque with the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set. Engineered for the legendary Ford 9-inch differential, this 3.89 gear ratio is favored by performance enthusiasts seeking a significant boost in off-the-line power. It's an ideal upgrade for vehicles with larger tires or those built for demanding off-road conditions and competitive use, providing the torque multiplication needed to overcome obstacles and accelerate rapidly.

Key Features:

  • Ford 9in Specific: Precision-fit for Ford 9-inch axle assemblies.
  • Aggressive Gear Ratio: 3.89:1, delivering maximum torque and improved acceleration.
  • Durable Construction: Manufactured from high-quality, hardened steel for extreme strength.
  • Quiet Operation: Advanced tooth design and manufacturing for reduced noise.
  • Performance Focus: Perfect for off-road, racing, or modified street applications.
  • Installation Ready: Designed for a precise fit, simplifying the installation process.

Revolution Gear & Axle is a trusted name, delivering robust and reliable drivetrain components. This 3.89 ratio set is built to endure the stresses of high-performance driving. It's an excellent choice for restoring or enhancing the performance of classic Fords or custom builds. By installing this gear set, you can significantly improve your vehicle's ability to launch quickly and power through challenging terrain. Proper gear pattern setup during installation is crucial for optimal performance and longevity.

Boost your vehicle's power. Order the Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set from GGCRACING now!

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