DESCRIPTION
Upgrade your valve train with the Supertech Dual Valve Spring Kit for the Subaru Impreza EJ25. SPRK-TS1015-SU5 is designed for the Subaru Impreza EJ25 and is sold as a complete kit.
Supertech Dual Valve Springs feature an inner and outer spring nested together, dramatically increasing the installed spring pressure and surge resistance needed for aggressive cam profiles and high-RPM operation. The dual spring design reduces valve float and improves valve control at the top of the RPM range, making them the go-to choice for forced induction builds, race engines, and any application pushing past factory cam specs.
Supertech Dual Valve Spring Kit Features:
- Matched inner and outer spring pair for optimal performance
- Increased installed seat pressure over OE single springs
- Eliminates valve float at high RPM
- Required for aggressive aftermarket cam profiles
- Precision wound for consistent spring rate across the set
- Direct fitment for listed engine applications
TECHNICAL DETAILS
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Supertech Subaru EJ20/EJ25 Dual Valve Spring (Drag Applications Only) - Single Unit
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