Ferrea Endurance Dual Valve Springs Kit w/ Titanium Retainers (EJ20/EJ25)

Endurance Dual Valve Springs Kit For Subaru STI EJ25

Ferrea Racing Valve Springs Kits bring together some of our best valvetrain components to help maximize performance specific to your engine application. Our knowledge and expertise have allowed us to build valve springs kits using components of premium quality and durability that exceed standard industry requirements.

Kit includes the following

Dual Springs #S10098 (16)
Titanium Retainers #E11065 (16)
Seat Locators #SL1051 (16)
Valve Locks #K10074 (16)

O.D. - 20.8mm, 28mm

I.D. - 16.51mm, 20.8mm

Seat Press. - 80lbs @36mm

Open Press. - 180lbs @26mm

Rate Inch - 254lbs

Coil Bind - 21mm

Max Net Lift - 14mm

**Special Order**