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Tomei Poncam Set for Subaru Impreza STI 2008+ EJ257 GRB/GVB

Tomei Performance


The long awaited GRB camshafts are finally here. We have designed our new camshafts to suit the new GRB engines characteristics which utilizes the AVCS variable valve timing on both the intake and exhaust. Our R&D has found our new camshafts are optimizing the performance of the AVCS throughout the entire power band. With excellent pickup and response the improved results show even at the high end of the power band.


Made from Special Materials

Precision Grinding

Preset Valve Timing

Stock Valve Springs Compatible

Best Overall Performance

Outstanding Turbine Response

Variable Valve Timing Compatible

Stable Idling

The Best Total Balance

Camshaft Specs:
Intake: 260 Duration 9.8MM Lift
Exhaust: 255 Duration 10.8MM Lift

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