Performance Engineering & Manufacturing Standard Quick Change Gear Set 21 — 10 Spline Steel

SKU: GSDD_61021
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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

Precision Engineering with PEM Quick Change Gear Set 21

Take control of your vehicle's performance with the Performance Engineering & Manufacturing (PEM) Standard Quick Change Gear Set 21. Designed for high-performance racing applications, these 10-spline gears are constructed from high-strength steel to provide the durability and precision required for competitive track use. Whether you are adjusting for a tight technical track or a high-speed oval, this gear set offers the mechanical advantage needed to optimize your lap times.

Technical Specifications

  • Set Number: 21
  • Spline Count: 10-Spline
  • Material: High-Grade Hardened Steel
  • 4.11 Ring & Pinion Ratio: 6.28 / 2.69
  • 4.86 Ring & Pinion Ratio: 7.43 / 3.18
  • Application: Standard Quick Change Differentials

The PEM Set 21 is engineered to withstand high torque loads while maintaining smooth operation. By utilizing advanced manufacturing techniques, these gears minimize energy loss, ensuring that more power reaches the wheels. The ability to quickly swap gear sets allows teams to adapt to changing track conditions, making this an essential component for any racing setup. With a focus on reliability and performance, PEM gear sets are the preferred choice for racers who refuse to compromise. Enhance your drivetrain efficiency and ensure your car is ready for the winner's circle with quality parts from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Precision Engineering with PEM Quick Change Gear Set 21

Take control of your vehicle's performance with the Performance Engineering & Manufacturing (PEM) Standard Quick Change Gear Set 21. Designed for high-performance racing applications, these 10-spline gears are constructed from high-strength steel to provide the durability and precision required for competitive track use. Whether you are adjusting for a tight technical track or a high-speed oval, this gear set offers the mechanical advantage needed to optimize your lap times.

Technical Specifications

  • Set Number: 21
  • Spline Count: 10-Spline
  • Material: High-Grade Hardened Steel
  • 4.11 Ring & Pinion Ratio: 6.28 / 2.69
  • 4.86 Ring & Pinion Ratio: 7.43 / 3.18
  • Application: Standard Quick Change Differentials

The PEM Set 21 is engineered to withstand high torque loads while maintaining smooth operation. By utilizing advanced manufacturing techniques, these gears minimize energy loss, ensuring that more power reaches the wheels. The ability to quickly swap gear sets allows teams to adapt to changing track conditions, making this an essential component for any racing setup. With a focus on reliability and performance, PEM gear sets are the preferred choice for racers who refuse to compromise. Enhance your drivetrain efficiency and ensure your car is ready for the winner's circle with quality parts from GGCRACING.

Product Details

Product Description

Precision Engineering with PEM Quick Change Gear Set 21

Take control of your vehicle's performance with the Performance Engineering & Manufacturing (PEM) Standard Quick Change Gear Set 21. Designed for high-performance racing applications, these 10-spline gears are constructed from high-strength steel to provide the durability and precision required for competitive track use. Whether you are adjusting for a tight technical track or a high-speed oval, this gear set offers the mechanical advantage needed to optimize your lap times.

Technical Specifications

  • Set Number: 21
  • Spline Count: 10-Spline
  • Material: High-Grade Hardened Steel
  • 4.11 Ring & Pinion Ratio: 6.28 / 2.69
  • 4.86 Ring & Pinion Ratio: 7.43 / 3.18
  • Application: Standard Quick Change Differentials

The PEM Set 21 is engineered to withstand high torque loads while maintaining smooth operation. By utilizing advanced manufacturing techniques, these gears minimize energy loss, ensuring that more power reaches the wheels. The ability to quickly swap gear sets allows teams to adapt to changing track conditions, making this an essential component for any racing setup. With a focus on reliability and performance, PEM gear sets are the preferred choice for racers who refuse to compromise. Enhance your drivetrain efficiency and ensure your car is ready for the winner's circle with quality parts from GGCRACING.

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