EXCEL from Richmond Ring & Pinion Gear Set 3.73 Ratio 3-Series — Fits GM 12-Bolt Rear End

SKU: GGVJ_12BC373T
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Sale price$356.99
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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 EXCEL from Richmond

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

Watch in action

Performance-Driven Drivetrain Components

Improve your vehicle's capability with the EXCEL from Richmond 3.73 Ring & Pinion Gear Set. Designed for the GM 12-Bolt rear end, this 3-series gear set delivers the strength and reliability needed for both street and strip applications. With a 3.73 ratio, you gain the perfect balance of torque, allowing for quicker acceleration without sacrificing too much top-end speed.

Why Choose This Gear Set?

  • Ratio: 3.73 for improved responsiveness.
  • Pinion: 30-spline design for robust power transfer.
  • Series: 3-Series for correct carrier fitment.
  • Size: 8.875 inch ring gear.
  • Quality: Precision-cut teeth for reduced friction and heat.

When you choose EXCEL from Richmond, you are choosing a brand known for its commitment to drivetrain excellence. This gear set is designed to be a direct replacement, ensuring a straightforward installation for your GM 12-bolt differential. The high-quality steel construction provides the necessary durability to withstand the stresses of high-performance driving. Whether you are building a custom project or restoring a classic, this gear set provides the reliability you need to drive with confidence. Upgrade your drivetrain today with the best parts available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About EXCEL from Richmond

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

Watch in action

Performance-Driven Drivetrain Components

Improve your vehicle's capability with the EXCEL from Richmond 3.73 Ring & Pinion Gear Set. Designed for the GM 12-Bolt rear end, this 3-series gear set delivers the strength and reliability needed for both street and strip applications. With a 3.73 ratio, you gain the perfect balance of torque, allowing for quicker acceleration without sacrificing too much top-end speed.

Why Choose This Gear Set?

  • Ratio: 3.73 for improved responsiveness.
  • Pinion: 30-spline design for robust power transfer.
  • Series: 3-Series for correct carrier fitment.
  • Size: 8.875 inch ring gear.
  • Quality: Precision-cut teeth for reduced friction and heat.

When you choose EXCEL from Richmond, you are choosing a brand known for its commitment to drivetrain excellence. This gear set is designed to be a direct replacement, ensuring a straightforward installation for your GM 12-bolt differential. The high-quality steel construction provides the necessary durability to withstand the stresses of high-performance driving. Whether you are building a custom project or restoring a classic, this gear set provides the reliability you need to drive with confidence. Upgrade your drivetrain today with the best parts available at GGCRACING.

Product Details

Product Description

About EXCEL from Richmond

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

Watch in action

Performance-Driven Drivetrain Components

Improve your vehicle's capability with the EXCEL from Richmond 3.73 Ring & Pinion Gear Set. Designed for the GM 12-Bolt rear end, this 3-series gear set delivers the strength and reliability needed for both street and strip applications. With a 3.73 ratio, you gain the perfect balance of torque, allowing for quicker acceleration without sacrificing too much top-end speed.

Why Choose This Gear Set?

  • Ratio: 3.73 for improved responsiveness.
  • Pinion: 30-spline design for robust power transfer.
  • Series: 3-Series for correct carrier fitment.
  • Size: 8.875 inch ring gear.
  • Quality: Precision-cut teeth for reduced friction and heat.

When you choose EXCEL from Richmond, you are choosing a brand known for its commitment to drivetrain excellence. This gear set is designed to be a direct replacement, ensuring a straightforward installation for your GM 12-bolt differential. The high-quality steel construction provides the necessary durability to withstand the stresses of high-performance driving. Whether you are building a custom project or restoring a classic, this gear set provides the reliability you need to drive with confidence. Upgrade your drivetrain today with the best parts available at GGCRACING.

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