Initially the valve springs begin to surge, becoming very sticky under loads. APPLICATION & PURPOSE.
Tomei Valve Spring Seat Set 0.2mm For Subaru WRX/STI EJ20/EJ25
Tomei Valve Spring Seat Set 0.5mm For Nissan SR20DET
Tomei Valve Spring Seat Set 0.3mm For Subaru WRX/STI EJ20/EJ25
Tomei Valve Spring Seat Set 0.2mm For Nissan RB20DET RB25DET RB26DETT
Tomei Valve Spring Seat Set 0.3mm For Nissan SR20DET
Tomei Valve Spring Seat Set 0.3mm For Nissan RB20DET RB25DET RB26DETT