ATI Super Damper 5.50in Aluminum Crank Pulley — Fits Subaru WRX EJ20 EJ22 EJ25

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SKU: APPATI917991
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Sale price$395.74 Regular price$406.73
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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 ATI

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

Precision Dampening for Subaru EJ Engines

The Subaru EJ-series engine is known for its unique power delivery, but it is also susceptible to harmonic vibrations that can impact longevity. The ATI 5.50in Aluminum Super Damper is specifically engineered to mitigate these issues across the EJ20, EJ22, and EJ25 platforms. By replacing the factory unit with this high-performance damper, you effectively reduce the torsional stress on your crankshaft, leading to smoother engine operation and improved reliability, especially in modified or high-boost setups.

Technical Features

  • 5.50-inch diameter for optimized harmonic control
  • Lightweight aluminum construction reduces parasitic loss
  • 4 and 5-groove belt compatibility
  • Engineered for EJ20, EJ22, and EJ25 engines
  • Advanced elastomer technology for vibration absorption

Subaru engines often face significant harmonic stress due to their boxer configuration. The ATI Super Damper is the industry-leading solution for managing these vibrations, ensuring that your engine internals remain protected during spirited driving or track sessions. This damper is a must-have for anyone looking to increase the reliability of their Subaru WRX or STI build. Its lightweight design not only protects your engine but also helps in freeing up throttle response by reducing rotating mass. Don't settle for less when it comes to your engine's health; choose the reliability of ATI. Shop for high-performance Subaru components and more at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About ATI

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

Precision Dampening for Subaru EJ Engines

The Subaru EJ-series engine is known for its unique power delivery, but it is also susceptible to harmonic vibrations that can impact longevity. The ATI 5.50in Aluminum Super Damper is specifically engineered to mitigate these issues across the EJ20, EJ22, and EJ25 platforms. By replacing the factory unit with this high-performance damper, you effectively reduce the torsional stress on your crankshaft, leading to smoother engine operation and improved reliability, especially in modified or high-boost setups.

Technical Features

  • 5.50-inch diameter for optimized harmonic control
  • Lightweight aluminum construction reduces parasitic loss
  • 4 and 5-groove belt compatibility
  • Engineered for EJ20, EJ22, and EJ25 engines
  • Advanced elastomer technology for vibration absorption

Subaru engines often face significant harmonic stress due to their boxer configuration. The ATI Super Damper is the industry-leading solution for managing these vibrations, ensuring that your engine internals remain protected during spirited driving or track sessions. This damper is a must-have for anyone looking to increase the reliability of their Subaru WRX or STI build. Its lightweight design not only protects your engine but also helps in freeing up throttle response by reducing rotating mass. Don't settle for less when it comes to your engine's health; choose the reliability of ATI. Shop for high-performance Subaru components and more at GGCRACING.

Product Details

Product Description

About ATI

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

Precision Dampening for Subaru EJ Engines

The Subaru EJ-series engine is known for its unique power delivery, but it is also susceptible to harmonic vibrations that can impact longevity. The ATI 5.50in Aluminum Super Damper is specifically engineered to mitigate these issues across the EJ20, EJ22, and EJ25 platforms. By replacing the factory unit with this high-performance damper, you effectively reduce the torsional stress on your crankshaft, leading to smoother engine operation and improved reliability, especially in modified or high-boost setups.

Technical Features

  • 5.50-inch diameter for optimized harmonic control
  • Lightweight aluminum construction reduces parasitic loss
  • 4 and 5-groove belt compatibility
  • Engineered for EJ20, EJ22, and EJ25 engines
  • Advanced elastomer technology for vibration absorption

Subaru engines often face significant harmonic stress due to their boxer configuration. The ATI Super Damper is the industry-leading solution for managing these vibrations, ensuring that your engine internals remain protected during spirited driving or track sessions. This damper is a must-have for anyone looking to increase the reliability of their Subaru WRX or STI build. Its lightweight design not only protects your engine but also helps in freeing up throttle response by reducing rotating mass. Don't settle for less when it comes to your engine's health; choose the reliability of ATI. Shop for high-performance Subaru components and more at GGCRACING.

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