HKS SSQV4 Blow Off Valve Kit — Fits 2008-2011 Subaru STi

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SKU: HKS71008-AF013
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Sale price$394.01 Regular price$395.00
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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 HKS

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

Watch in action

Ultimate Boost Response for the STi

The HKS SSQV4 Blow Off Valve Kit is the definitive choice for 2008-2011 Subaru STi owners seeking to improve their turbocharger's performance and longevity. Known for its advanced sequential valve structure, the SSQV4 provides an immediate response to throttle changes, ensuring that your turbocharger remains spooled and ready for the next gear. By effectively venting excess pressure, it prevents compressor surge, which is vital for protecting your turbocharger during high-performance driving.

Technical Advantages

  • Sequential valve technology for rapid pressure relief
  • Precision-machined billet aluminum construction
  • Direct fitment for 2008-2011 Subaru STi
  • Includes all necessary hardware for a seamless installation
  • Superior sealing under high boost levels

Unlike standard bypass valves, the HKS SSQV4 utilizes a pull-type relief design that ensures a tight seal under high boost, preventing the leaks that often plague factory components. This results in more consistent boost levels and improved throttle response across the entire RPM range. Whether you are running stock boost or a modified tune, the SSQV4 provides the reliability and performance that Subaru enthusiasts demand. Enhance your STi's driving dynamics and enjoy the confidence of a high-quality HKS component. Find your performance parts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About HKS

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

Watch in action

Ultimate Boost Response for the STi

The HKS SSQV4 Blow Off Valve Kit is the definitive choice for 2008-2011 Subaru STi owners seeking to improve their turbocharger's performance and longevity. Known for its advanced sequential valve structure, the SSQV4 provides an immediate response to throttle changes, ensuring that your turbocharger remains spooled and ready for the next gear. By effectively venting excess pressure, it prevents compressor surge, which is vital for protecting your turbocharger during high-performance driving.

Technical Advantages

  • Sequential valve technology for rapid pressure relief
  • Precision-machined billet aluminum construction
  • Direct fitment for 2008-2011 Subaru STi
  • Includes all necessary hardware for a seamless installation
  • Superior sealing under high boost levels

Unlike standard bypass valves, the HKS SSQV4 utilizes a pull-type relief design that ensures a tight seal under high boost, preventing the leaks that often plague factory components. This results in more consistent boost levels and improved throttle response across the entire RPM range. Whether you are running stock boost or a modified tune, the SSQV4 provides the reliability and performance that Subaru enthusiasts demand. Enhance your STi's driving dynamics and enjoy the confidence of a high-quality HKS component. Find your performance parts at GGCRACING.

Product Details

Product Description

About HKS

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

Watch in action

Ultimate Boost Response for the STi

The HKS SSQV4 Blow Off Valve Kit is the definitive choice for 2008-2011 Subaru STi owners seeking to improve their turbocharger's performance and longevity. Known for its advanced sequential valve structure, the SSQV4 provides an immediate response to throttle changes, ensuring that your turbocharger remains spooled and ready for the next gear. By effectively venting excess pressure, it prevents compressor surge, which is vital for protecting your turbocharger during high-performance driving.

Technical Advantages

  • Sequential valve technology for rapid pressure relief
  • Precision-machined billet aluminum construction
  • Direct fitment for 2008-2011 Subaru STi
  • Includes all necessary hardware for a seamless installation
  • Superior sealing under high boost levels

Unlike standard bypass valves, the HKS SSQV4 utilizes a pull-type relief design that ensures a tight seal under high boost, preventing the leaks that often plague factory components. This results in more consistent boost levels and improved throttle response across the entire RPM range. Whether you are running stock boost or a modified tune, the SSQV4 provides the reliability and performance that Subaru enthusiasts demand. Enhance your STi's driving dynamics and enjoy the confidence of a high-quality HKS component. Find your performance parts at GGCRACING.

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