CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2) SC7421-4 Mini-Antennas 5" inlet matches standard exhaust

5" inlet matches standard exhaust piping — you'll connect it at your system's outlet

reliable power across the entire rev range

Pre-assembled unit - Eliminates the hassle of pressing bearings and adjusting preload yourself

improving downforce and reducing fatigue during long stints

developed through rigorous R&D

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2) SC7421-4 Mini-Antennas 5" inlet matches standard exhaustVehicle Fitments: Year Make Model Submodel 2008 Subaru Impreza 2. 0R 2009 2010 Subaru Impreza 2. 5 GT 2006 2011 Subaru Impreza 2. 5i 2010 2011 Subaru Impreza 2. 5i Premium 2012 Subaru Impreza Limited, Base, Touring, Premium, Sport Premium, Sport Limited 2005 2011 Subaru Impreza Outback Sport 2004 Subaru Impreza Outback, TS 2009 2012 Subaru Impreza R, WRX Premium 2004 2005 Subaru Impreza RS 2008 2012 Subaru Impreza Sport 2010 Subaru Impreza WRX GT, WRX