Performance Engineering & Manufacturing 6.50 Ratio 31 Spline Center Section — Ford 9 in

SKU: GSDD_CSFS65031LW
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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 Performance Engineering & Manufacturing

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

Watch in action

Lightweight Differential Center Section

The Performance Engineering & Manufacturing 6.50 Ratio 31-Spline Center Section is engineered for racers who demand the absolute best in drivetrain efficiency. Featuring a specialized lightweight design, this unit is built to reduce parasitic power loss, allowing more of your engine's power to reach the pavement. It is the ideal choice for Ford 9-inch rear ends where every ounce counts.

Technical Specifications

  • Ratio: 6.50 for specialized racing applications
  • Spline Count: 31-spline for high-strength engagement
  • Design: Lightweight steel spool construction
  • Finish: Natural finish, precision-machined
  • Compatibility: Fits standard Ford 9-inch rear-end housings

This assembled differential case is more than just a gear set; it is a performance-enhancing component designed to withstand the rigors of competitive motorsports. By utilizing a lightweight steel spool, this center section minimizes rotating mass, which translates to faster acceleration and improved vehicle agility. Each component is manufactured with tight tolerances to ensure smooth operation and maximum durability under high-load conditions. Whether you are competing in drag racing or other high-performance events, this center section provides the reliability and performance edge you need to stay ahead of the competition. Elevate your drivetrain performance today with this premium part from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Performance Engineering & Manufacturing

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

Watch in action

Lightweight Differential Center Section

The Performance Engineering & Manufacturing 6.50 Ratio 31-Spline Center Section is engineered for racers who demand the absolute best in drivetrain efficiency. Featuring a specialized lightweight design, this unit is built to reduce parasitic power loss, allowing more of your engine's power to reach the pavement. It is the ideal choice for Ford 9-inch rear ends where every ounce counts.

Technical Specifications

  • Ratio: 6.50 for specialized racing applications
  • Spline Count: 31-spline for high-strength engagement
  • Design: Lightweight steel spool construction
  • Finish: Natural finish, precision-machined
  • Compatibility: Fits standard Ford 9-inch rear-end housings

This assembled differential case is more than just a gear set; it is a performance-enhancing component designed to withstand the rigors of competitive motorsports. By utilizing a lightweight steel spool, this center section minimizes rotating mass, which translates to faster acceleration and improved vehicle agility. Each component is manufactured with tight tolerances to ensure smooth operation and maximum durability under high-load conditions. Whether you are competing in drag racing or other high-performance events, this center section provides the reliability and performance edge you need to stay ahead of the competition. Elevate your drivetrain performance today with this premium part from GGCRACING.

Product Details

Product Description

About Performance Engineering & Manufacturing

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

Watch in action

Lightweight Differential Center Section

The Performance Engineering & Manufacturing 6.50 Ratio 31-Spline Center Section is engineered for racers who demand the absolute best in drivetrain efficiency. Featuring a specialized lightweight design, this unit is built to reduce parasitic power loss, allowing more of your engine's power to reach the pavement. It is the ideal choice for Ford 9-inch rear ends where every ounce counts.

Technical Specifications

  • Ratio: 6.50 for specialized racing applications
  • Spline Count: 31-spline for high-strength engagement
  • Design: Lightweight steel spool construction
  • Finish: Natural finish, precision-machined
  • Compatibility: Fits standard Ford 9-inch rear-end housings

This assembled differential case is more than just a gear set; it is a performance-enhancing component designed to withstand the rigors of competitive motorsports. By utilizing a lightweight steel spool, this center section minimizes rotating mass, which translates to faster acceleration and improved vehicle agility. Each component is manufactured with tight tolerances to ensure smooth operation and maximum durability under high-load conditions. Whether you are competing in drag racing or other high-performance events, this center section provides the reliability and performance edge you need to stay ahead of the competition. Elevate your drivetrain performance today with this premium part from GGCRACING.

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