Dynomax Header-Back Exhaust Kit 2.25in Aluminized Steel — Fits 1973-1987 GM Fullsize Truck

SKU: DWRS_89003
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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 Dynomax

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

Watch in action

Maximize Your GM Truck's Exhaust Efficiency

Unlock the true potential of your 1973-1987 GM fullsize truck with the Dynomax Header-Back Exhaust Kit. Designed for those who prioritize both performance and durability, this exhaust system is the ideal upgrade for your classic vehicle. By replacing restrictive factory piping with high-flow 2.25-inch aluminized steel tubing, you can significantly improve engine breathing and overall exhaust scavenging efficiency.

Why Choose This Dynomax Kit?

  • Engineered for Performance: Reduces backpressure for improved throttle response.
  • Superior Materials: Aluminized steel construction offers enhanced rust protection.
  • Perfect Fit: Tailored specifically for the 1973-1987 GM truck platform.
  • Easy Installation: Designed for a header-back configuration to simplify your build.

The Dynomax commitment to quality ensures that every bend and weld meets the highest standards, providing you with a reliable exhaust solution that sounds as good as it performs. This kit is perfect for enthusiasts looking to restore their truck to its former glory or those performing a performance-oriented build. The aluminized coating provides a protective barrier against the elements, ensuring that your investment stays looking and performing great for years to come. Whether you are hitting the track or the trail, trust in the engineering excellence of Dynomax. Elevate your driving experience today with premium parts from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Dynomax

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

Watch in action

Maximize Your GM Truck's Exhaust Efficiency

Unlock the true potential of your 1973-1987 GM fullsize truck with the Dynomax Header-Back Exhaust Kit. Designed for those who prioritize both performance and durability, this exhaust system is the ideal upgrade for your classic vehicle. By replacing restrictive factory piping with high-flow 2.25-inch aluminized steel tubing, you can significantly improve engine breathing and overall exhaust scavenging efficiency.

Why Choose This Dynomax Kit?

  • Engineered for Performance: Reduces backpressure for improved throttle response.
  • Superior Materials: Aluminized steel construction offers enhanced rust protection.
  • Perfect Fit: Tailored specifically for the 1973-1987 GM truck platform.
  • Easy Installation: Designed for a header-back configuration to simplify your build.

The Dynomax commitment to quality ensures that every bend and weld meets the highest standards, providing you with a reliable exhaust solution that sounds as good as it performs. This kit is perfect for enthusiasts looking to restore their truck to its former glory or those performing a performance-oriented build. The aluminized coating provides a protective barrier against the elements, ensuring that your investment stays looking and performing great for years to come. Whether you are hitting the track or the trail, trust in the engineering excellence of Dynomax. Elevate your driving experience today with premium parts from GGCRACING.

Product Details

Product Description

About Dynomax

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

Watch in action

Maximize Your GM Truck's Exhaust Efficiency

Unlock the true potential of your 1973-1987 GM fullsize truck with the Dynomax Header-Back Exhaust Kit. Designed for those who prioritize both performance and durability, this exhaust system is the ideal upgrade for your classic vehicle. By replacing restrictive factory piping with high-flow 2.25-inch aluminized steel tubing, you can significantly improve engine breathing and overall exhaust scavenging efficiency.

Why Choose This Dynomax Kit?

  • Engineered for Performance: Reduces backpressure for improved throttle response.
  • Superior Materials: Aluminized steel construction offers enhanced rust protection.
  • Perfect Fit: Tailored specifically for the 1973-1987 GM truck platform.
  • Easy Installation: Designed for a header-back configuration to simplify your build.

The Dynomax commitment to quality ensures that every bend and weld meets the highest standards, providing you with a reliable exhaust solution that sounds as good as it performs. This kit is perfect for enthusiasts looking to restore their truck to its former glory or those performing a performance-oriented build. The aluminized coating provides a protective barrier against the elements, ensuring that your investment stays looking and performing great for years to come. Whether you are hitting the track or the trail, trust in the engineering excellence of Dynomax. Elevate your driving experience today with premium parts from GGCRACING.

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