IAG Beehive Valve Spring Set w/ Titanium Retainers - 2004-2021 STI / 2002-2014 WRX | IAG-ENG-3206

IAG’s Beehive Valve Spring And Titanium Retainer Set reduces valvetrain weight by up to 68 grams and delivers increased spring pressure, allowing you to run increased boost and RPM over stock. This valve spring and retainer set is engineered for compatibility with all Subaru EJ20 and EJ25 engines. The lightweight and durable design of this set make it the ideal upgrade for mild-aggressive street, road race and drag racing applications. 92 lbs @ 1.340" - Seat Pressure 241lbs @ .893" - Open Pressure Material: Titanium, Chrome Silicone Alloy Steel Package Includes: (x16) IAG Beehive Valve Springs, (x16) IAG Titanium retainers Fitment: Compatible with all Subaru EJ20 and EJ25 engines. ADDITIONAL INFORMATION: Valve keepers/locks are NOT Included, May be used with OE cams or S1/S2/S3 GSC cams or similar.