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9 grade M6x16mm bolts
and not suitable for twin scroll turbo)
2010-2014 Subaru Impreza WRX Limited 2009-2014 Subaru Impreza WRX Premium 2007-2014 Subaru Impreza WRX STI 2007
Process West have gone one step further with this kit by increasing the inlet track diameter from 72mm to 76mm allowing a greater volume of air to reach the turbo
RCM / Omega Piston Set - High Compression 2.1 Stroker EJ20 Engine - Fuel System_Injectors 9 grade M6x16mm boltsRCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manufacturing. So why forged? A forging is still the best way to manufacture a piston, not just from a production point of view but for the strength of the piston. There are certain areas where a piston machined from
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