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- 2002-2005 WRX
- 2006-2007 WRX
- 2008-2014 WRX
- 2004-2007 STi
- 2008-2014 STi
- 2015-2019 STi
- Fitment Notes: EJ25, EJ20 Engine
- Brand: Cosworth
- Manufacturer's Part Number: 20000166
- Primary Material: Japanese Kobe steel
- We ship internationally! Please email us for international shipping quotes.
Cosworth High RPM Valve Springs are the result of countless hours of engineering, testing and validation ensuring the best possible spring for high performance applications. Cosworth High RPM Valve Springs are wound from the world's finest Japanese Kobe steel and feature dual chamfered ends to reduce wear on seats and retainers. Each spring has been engineered with increased seat pressure along with higher lift capability for optimum performance potential and improved valve control. Single spring design allows easy installation with no machining required and is perfect for typical high performance use.
Manufactured from the finest Japanese Kobe steel
Single spring design for easy installation
Dual chamfered ends
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