PRW Extreme Duty Flexplate 153-Tooth SFI 29.1 — Fits SBC 57-85

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SKU: FMJX_1832720
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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.

Watch in action

Heavy-Duty Performance for Small Block Chevy

The PRW Extreme Duty Platinum Flexplate is the gold standard for 1957-1985 Small Block Chevy engines. Featuring a high-inertia design, this 153-tooth flexplate helps maintain momentum during gear changes, making it an ideal choice for both street-strip and bracket racing applications. Built to exceed SFI 29.1 specifications, it offers unparalleled durability for high-horsepower builds.

Why Choose PRW Extreme Duty?

  • High Inertia Design: Improves engine performance and throttle response.
  • SFI 29.1 Certified: Meets strict safety standards for racing.
  • Compatibility: Specifically designed for 2-piece rear main seal SBC and V6 engines.
  • Robust Construction: Heavy-duty steel prevents warping and ring gear damage.

When you are upgrading your transmission or performing a rebuild, the flexplate is a critical component that should never be overlooked. A failing stock flexplate can cause catastrophic damage to your transmission and engine block. This PRW unit provides the structural rigidity needed to handle aggressive launches and high-RPM shifts. Experience the difference in quality and performance with this essential upgrade. Find all your high-performance drivetrain needs 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

Heavy-Duty Performance for Small Block Chevy

The PRW Extreme Duty Platinum Flexplate is the gold standard for 1957-1985 Small Block Chevy engines. Featuring a high-inertia design, this 153-tooth flexplate helps maintain momentum during gear changes, making it an ideal choice for both street-strip and bracket racing applications. Built to exceed SFI 29.1 specifications, it offers unparalleled durability for high-horsepower builds.

Why Choose PRW Extreme Duty?

  • High Inertia Design: Improves engine performance and throttle response.
  • SFI 29.1 Certified: Meets strict safety standards for racing.
  • Compatibility: Specifically designed for 2-piece rear main seal SBC and V6 engines.
  • Robust Construction: Heavy-duty steel prevents warping and ring gear damage.

When you are upgrading your transmission or performing a rebuild, the flexplate is a critical component that should never be overlooked. A failing stock flexplate can cause catastrophic damage to your transmission and engine block. This PRW unit provides the structural rigidity needed to handle aggressive launches and high-RPM shifts. Experience the difference in quality and performance with this essential upgrade. Find all your high-performance drivetrain needs 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

Heavy-Duty Performance for Small Block Chevy

The PRW Extreme Duty Platinum Flexplate is the gold standard for 1957-1985 Small Block Chevy engines. Featuring a high-inertia design, this 153-tooth flexplate helps maintain momentum during gear changes, making it an ideal choice for both street-strip and bracket racing applications. Built to exceed SFI 29.1 specifications, it offers unparalleled durability for high-horsepower builds.

Why Choose PRW Extreme Duty?

  • High Inertia Design: Improves engine performance and throttle response.
  • SFI 29.1 Certified: Meets strict safety standards for racing.
  • Compatibility: Specifically designed for 2-piece rear main seal SBC and V6 engines.
  • Robust Construction: Heavy-duty steel prevents warping and ring gear damage.

When you are upgrading your transmission or performing a rebuild, the flexplate is a critical component that should never be overlooked. A failing stock flexplate can cause catastrophic damage to your transmission and engine block. This PRW unit provides the structural rigidity needed to handle aggressive launches and high-RPM shifts. Experience the difference in quality and performance with this essential upgrade. Find all your high-performance drivetrain needs at GGCRACING.

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