Ferrea Dual Valve Spring Mitsubishi EVO X (QTY 16) Impreza_2012-2016 79" inch diameter (200mm)

79" inch diameter (200mm)

Please make sure to check Rod to Oil Squirter clearance when relocating oil squirter

The ISR Performance Exhaust is a complete stainless steel exhaust system

Infiniti G37X Coilover Specs:

Ferrea Dual Valve Spring Mitsubishi EVO X (QTY 16) Impreza_2012-2016 79" inch diameter (200mm)Part #: S10118 Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear. Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicon steel. Our springs are heat treated and stress relieved, which