Fits all 1ZZ-FE engines:
2000-05 Celica GT, MR2 Spyder
1998-08 Corolla, Matrix (not XRS), Vibe (not GT)
This titanium retainer set replaces your stock steel retainers, greatly reducing valvetrain mass and allowing higher engine speeds (higher RPM) without valve float. A must for any engine that will see extreme high RPM use such as drag racing or sustained high RPM use such as road course racing. Direct replacement, no modifications necessary. Add upgraded valve springs for even better protection from valve float!
MWR Ti retainer weight: 5.3g/each
OEM Steel retainer weight: 9.2g/each