Supertech Subaru EJ20/EJ25 Dual Valve Spring (Drag Applications Only) - Single Unit

Description

Upgrade your valve train with Supertech Dual Valve Springs for the Subaru EJ20/EJ25. SPR-TS1015-IN-SU4 fits the Subaru EJ20/EJ25 and is sold as a single unit.

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 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