EXCEL from Richmond Ring & Pinion Gear Set 3.42 Ratio — Fits GM 12-Bolt 8.875in Rear Ends

SKU: GGVJ_12BC342
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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

Precision Engineered GM 12-Bolt Gears

Upgrade your classic GM drivetrain with the EXCEL from Richmond 3.42 ratio ring and pinion gear set. Designed specifically for the iconic GM 12-bolt rear end featuring an 8.875-inch ring gear, this set is ideal for drivers seeking a balance between highway cruising efficiency and improved acceleration. Richmond’s EXCEL line provides professional-grade quality at a value-driven price point, making it the perfect choice for restoration projects or performance upgrades.

Technical Features

  • Gear Ratio: 3.42
  • Application: GM 12-Bolt 8.875" Rear Ends
  • Pinion Spline Count: 30 Spline
  • Series: 3 Series Carrier
  • Construction: Precision-machined alloy steel

These gears are engineered to provide a quiet, smooth ride while maintaining the strength required for high-torque applications. The 30-spline pinion ensures a secure fit within your differential housing. Proper setup is critical for the longevity of any ring and pinion set; we recommend professional installation to achieve the ideal gear contact pattern and backlash settings. By choosing this gear set, you are investing in the reliability of a proven drivetrain manufacturer. Whether you are cruising on the highway or hitting the local strip, this gear set offers the consistency and durability you need. Elevate your vehicle's performance with premium drivetrain components from 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

Precision Engineered GM 12-Bolt Gears

Upgrade your classic GM drivetrain with the EXCEL from Richmond 3.42 ratio ring and pinion gear set. Designed specifically for the iconic GM 12-bolt rear end featuring an 8.875-inch ring gear, this set is ideal for drivers seeking a balance between highway cruising efficiency and improved acceleration. Richmond’s EXCEL line provides professional-grade quality at a value-driven price point, making it the perfect choice for restoration projects or performance upgrades.

Technical Features

  • Gear Ratio: 3.42
  • Application: GM 12-Bolt 8.875" Rear Ends
  • Pinion Spline Count: 30 Spline
  • Series: 3 Series Carrier
  • Construction: Precision-machined alloy steel

These gears are engineered to provide a quiet, smooth ride while maintaining the strength required for high-torque applications. The 30-spline pinion ensures a secure fit within your differential housing. Proper setup is critical for the longevity of any ring and pinion set; we recommend professional installation to achieve the ideal gear contact pattern and backlash settings. By choosing this gear set, you are investing in the reliability of a proven drivetrain manufacturer. Whether you are cruising on the highway or hitting the local strip, this gear set offers the consistency and durability you need. Elevate your vehicle's performance with premium drivetrain components from 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

Precision Engineered GM 12-Bolt Gears

Upgrade your classic GM drivetrain with the EXCEL from Richmond 3.42 ratio ring and pinion gear set. Designed specifically for the iconic GM 12-bolt rear end featuring an 8.875-inch ring gear, this set is ideal for drivers seeking a balance between highway cruising efficiency and improved acceleration. Richmond’s EXCEL line provides professional-grade quality at a value-driven price point, making it the perfect choice for restoration projects or performance upgrades.

Technical Features

  • Gear Ratio: 3.42
  • Application: GM 12-Bolt 8.875" Rear Ends
  • Pinion Spline Count: 30 Spline
  • Series: 3 Series Carrier
  • Construction: Precision-machined alloy steel

These gears are engineered to provide a quiet, smooth ride while maintaining the strength required for high-torque applications. The 30-spline pinion ensures a secure fit within your differential housing. Proper setup is critical for the longevity of any ring and pinion set; we recommend professional installation to achieve the ideal gear contact pattern and backlash settings. By choosing this gear set, you are investing in the reliability of a proven drivetrain manufacturer. Whether you are cruising on the highway or hitting the local strip, this gear set offers the consistency and durability you need. Elevate your vehicle's performance with premium drivetrain components from GGCRACING.

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