GSC Power-Division CNC turned chromoly valve spring seats for the 4G63 Evo and 1G/2G DSM. These are meant for those pushing to the absolute limits! With an additional 0.035" built in, the need for shims and potential wrong stacking of shims is eliminated when higher spring seat pressure is required. Sold as a set of 16.

Vehicle Fitment:
Mitsubishi 4G63
1992-2006 Evolution I-IX
1990-1999 Eclipse GST/GSX
1990-1998 Talon TSi
1990-1994 Laser RS
1991-1992 Galant VR4

Includes:
(16) Valve Spring Seats