PRW Xtreme Duty High Inertia Flexplate SFI 29.1 — Fits GM LS Series

SKU: FMJX_1834624
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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 PRW

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

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PRW High Inertia Xtreme Duty Flexplate

Take your GM LS-series build to the next level with the PRW Xtreme Duty High Inertia flexplate. Designed for those who need extra rotational energy and superior structural strength, this 168-tooth flexplate is SFI 29.1 certified, making it a mandatory upgrade for serious performance applications and competitive racing.

Advanced Engineering Features

  • High Inertia Design: Provides improved rotational stability for high-output engines.
  • SFI 29.1 Certification: Meets strict safety standards for high-RPM usage.
  • Premium Steel Construction: Engineered to resist fatigue and deformation under heavy load.
  • Internal Balance: Precision-balanced for optimal engine harmonic performance.

The high-inertia design of this PRW flexplate helps maintain momentum during gear shifts and off-the-line launches, making it ideal for drag racing and high-performance street driving. By upgrading to this heavy-duty unit, you are protecting your transmission and engine from the potential failures associated with factory-style flexplates. The precision-machined bolt holes and perfect tooth profile ensure a smooth, reliable engagement every time you turn the key. Whether you are building a naturally aspirated beast or a forced-induction monster, this flexplate is designed to handle the pressure. Invest in the best for your drivetrain and experience the difference in quality. Discover more performance solutions for your vehicle at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About PRW

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

Watch in action

PRW High Inertia Xtreme Duty Flexplate

Take your GM LS-series build to the next level with the PRW Xtreme Duty High Inertia flexplate. Designed for those who need extra rotational energy and superior structural strength, this 168-tooth flexplate is SFI 29.1 certified, making it a mandatory upgrade for serious performance applications and competitive racing.

Advanced Engineering Features

  • High Inertia Design: Provides improved rotational stability for high-output engines.
  • SFI 29.1 Certification: Meets strict safety standards for high-RPM usage.
  • Premium Steel Construction: Engineered to resist fatigue and deformation under heavy load.
  • Internal Balance: Precision-balanced for optimal engine harmonic performance.

The high-inertia design of this PRW flexplate helps maintain momentum during gear shifts and off-the-line launches, making it ideal for drag racing and high-performance street driving. By upgrading to this heavy-duty unit, you are protecting your transmission and engine from the potential failures associated with factory-style flexplates. The precision-machined bolt holes and perfect tooth profile ensure a smooth, reliable engagement every time you turn the key. Whether you are building a naturally aspirated beast or a forced-induction monster, this flexplate is designed to handle the pressure. Invest in the best for your drivetrain and experience the difference in quality. Discover more performance solutions for your vehicle at GGCRACING.

Product Details

Product Description

About PRW

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

Watch in action

PRW High Inertia Xtreme Duty Flexplate

Take your GM LS-series build to the next level with the PRW Xtreme Duty High Inertia flexplate. Designed for those who need extra rotational energy and superior structural strength, this 168-tooth flexplate is SFI 29.1 certified, making it a mandatory upgrade for serious performance applications and competitive racing.

Advanced Engineering Features

  • High Inertia Design: Provides improved rotational stability for high-output engines.
  • SFI 29.1 Certification: Meets strict safety standards for high-RPM usage.
  • Premium Steel Construction: Engineered to resist fatigue and deformation under heavy load.
  • Internal Balance: Precision-balanced for optimal engine harmonic performance.

The high-inertia design of this PRW flexplate helps maintain momentum during gear shifts and off-the-line launches, making it ideal for drag racing and high-performance street driving. By upgrading to this heavy-duty unit, you are protecting your transmission and engine from the potential failures associated with factory-style flexplates. The precision-machined bolt holes and perfect tooth profile ensure a smooth, reliable engagement every time you turn the key. Whether you are building a naturally aspirated beast or a forced-induction monster, this flexplate is designed to handle the pressure. Invest in the best for your drivetrain and experience the difference in quality. Discover more performance solutions for your vehicle at GGCRACING.

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