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HKS RS Intake System [2015-2021 Subaru WRX/STI]

HKS RS Intake System [2015-2021 Subaru WRX/STI]

Regular price $385.99 USD
Regular price $450.00 USD Sale price $385.99 USD
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2015-2021 Subaru WRX/STI RS Intake System by HKS

Highly effective intake system designed to increase the flow of cold and oxygen dense air to the engine.


  • Kit includes Super Power Flow and Aluminum Suction pipe. Polished aluminum pipe improves engine bay appearance
  • Improving an air intake efficiently, HKS changed from flexible stock rubber hose to aluminum pipe
  • This significantly reduces an airflow restriction at an HKS flow bench test compared to the stock intake system
  • Removable air duct which has a wide opening is newly designed. This can be directly used stock ECU even for the normal vehicle or the vehicle with a custom muffler. You can reduce more air intake resistance, by removing the air guide


  • Enjoy a distinctive sound
  • Increased Power

Please Note: 70029-AF005 requires 70020-AF108 for installation. 70026-AF004 is both of the previous parts mentioned in one package.

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