GSC Power Division Exhaust Valve 28.5mm Chrome Polished — Toyota Supra B58 / BMW S58

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SKU: GSC2091-12
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Sale price$443.07 Regular price$492.30
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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 GSC Power Division

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

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High-Performance Exhaust Valves for B58 and S58 Engines

Upgrade your modern performance engine with the GSC Power Division 28.5mm exhaust valve set. Specifically engineered for the Toyota Supra B58 and BMW S58 platforms, these valves are designed to handle the high heat and pressure of modern turbocharged engines. Whether you are building a high-horsepower street car or a dedicated track machine, these valves provide the reliability and flow characteristics needed to push your engine to its limits.

Advanced Engineering for Modern Platforms

  • Application: Toyota Supra B58, BMW B58, and BMW M3/M4 S58 engines
  • Head Diameter: 28.5mm
  • Material: High-strength, heat-resistant alloy
  • Finish: Chrome polished for reduced valve guide friction
  • Quantity: Set of 12 valves

These valves feature a precision-ground profile that ensures a perfect seal against the valve seat, optimizing combustion pressure and preventing power loss. The chrome-polished surface finish is specifically chosen to reduce wear and tear on the valve guides, extending the service life of your cylinder head assembly. As modern engines like the B58 and S58 continue to be pushed to higher power levels, upgrading to high-quality valvetrain components becomes essential for preventing premature failure. GSC Power Division has utilized their extensive experience in racing to develop these valves, ensuring they meet the demands of enthusiasts who refuse to compromise on quality. Equip your Supra or M-series engine with the best components available and shop the full selection at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About GSC Power Division

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

Watch in action

High-Performance Exhaust Valves for B58 and S58 Engines

Upgrade your modern performance engine with the GSC Power Division 28.5mm exhaust valve set. Specifically engineered for the Toyota Supra B58 and BMW S58 platforms, these valves are designed to handle the high heat and pressure of modern turbocharged engines. Whether you are building a high-horsepower street car or a dedicated track machine, these valves provide the reliability and flow characteristics needed to push your engine to its limits.

Advanced Engineering for Modern Platforms

  • Application: Toyota Supra B58, BMW B58, and BMW M3/M4 S58 engines
  • Head Diameter: 28.5mm
  • Material: High-strength, heat-resistant alloy
  • Finish: Chrome polished for reduced valve guide friction
  • Quantity: Set of 12 valves

These valves feature a precision-ground profile that ensures a perfect seal against the valve seat, optimizing combustion pressure and preventing power loss. The chrome-polished surface finish is specifically chosen to reduce wear and tear on the valve guides, extending the service life of your cylinder head assembly. As modern engines like the B58 and S58 continue to be pushed to higher power levels, upgrading to high-quality valvetrain components becomes essential for preventing premature failure. GSC Power Division has utilized their extensive experience in racing to develop these valves, ensuring they meet the demands of enthusiasts who refuse to compromise on quality. Equip your Supra or M-series engine with the best components available and shop the full selection at GGCRACING.

Product Details

Product Description

About GSC Power Division

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

Watch in action

High-Performance Exhaust Valves for B58 and S58 Engines

Upgrade your modern performance engine with the GSC Power Division 28.5mm exhaust valve set. Specifically engineered for the Toyota Supra B58 and BMW S58 platforms, these valves are designed to handle the high heat and pressure of modern turbocharged engines. Whether you are building a high-horsepower street car or a dedicated track machine, these valves provide the reliability and flow characteristics needed to push your engine to its limits.

Advanced Engineering for Modern Platforms

  • Application: Toyota Supra B58, BMW B58, and BMW M3/M4 S58 engines
  • Head Diameter: 28.5mm
  • Material: High-strength, heat-resistant alloy
  • Finish: Chrome polished for reduced valve guide friction
  • Quantity: Set of 12 valves

These valves feature a precision-ground profile that ensures a perfect seal against the valve seat, optimizing combustion pressure and preventing power loss. The chrome-polished surface finish is specifically chosen to reduce wear and tear on the valve guides, extending the service life of your cylinder head assembly. As modern engines like the B58 and S58 continue to be pushed to higher power levels, upgrading to high-quality valvetrain components becomes essential for preventing premature failure. GSC Power Division has utilized their extensive experience in racing to develop these valves, ensuring they meet the demands of enthusiasts who refuse to compromise on quality. Equip your Supra or M-series engine with the best components available and shop the full selection at GGCRACING.

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