Ferrea Dual Valve Spring Kit Subaru BRZ / Scion FR-S 2013-2020 | KT4022 vendor_Action Clutch V-band input - V-Band Output

V-band input - V-Band Output - Single Scroll - A / R 0

Much brighter over stock

Bolt on 4pc design

HKS Type S Rear Diffuser

Ferrea Dual Valve Spring Kit Subaru BRZ / Scion FR-S 2013-2020 | KT4022 vendor_Action Clutch V-band input - V-Band OutputApplications: 20132020 Subaru BRZ 20132020 Scion FR S Harmonics and high frequency fatigue are present in every racing engine and can quickly destroy the valvetrain if left uncontrolled. The Ferrea Dual Valve Spring Kit is engineered to eliminate these issues by delivering exceptional stability, control, and durability under the most demanding high RPM conditions. Designed for Subaru BRZ and Scion FR S, Ferrea valve springs are developed from premium