Manufactured by SPI Pistons are for standard bore size 76.00mm SPI pistons are engineered to provide the best possible path for combustion chamber heat transfer to the cylinder walls All pistons, rings, pins and circlips are manufactured to OEM specifications All individual components are interchangeable with original parts Piston weight compatible with original piston Contains all gaskets pictured to rebuild top end oil seals not included Made in Taiwan T-Moly series pistons additional benefits Machined smooth heads MOS2 Teflon-molybdenum coating Hard anodized crowns Hypereutectic cast Fits the following models 2004 Ski-Doo 500SS GSX 2004 Ski-Doo 500SS Legend 2004 Ski-Doo 500SS MXZ Adrenaline 2004 Ski-Doo 500SS MXZ Trail 2004 Ski-Doo 500SS MXZ Trail R 2005 Ski-Doo 500SS GSX 2005 Ski-Doo 500SS GTX 2005 Ski-Doo 500SS MXZ Adrenaline 2005 Ski-Doo 500SS MXZ Trail 2006 Ski-Doo 500SS GSX 2006 Ski-Doo 500SS GTX 2006 Ski-Doo 500SS MXZ Adrenaline 2006 Ski-Doo 500SS MXZ Trail 2007 Ski-Doo 500SS GSX Sport 2007 Ski-Doo 500SS GTX Sport 2007 Ski-Doo 500SS MXZ Adrenaline 2007 Ski-Doo 500SS MXZ Trail 2008 Ski-Doo 500SS GSX Sport 2008 Ski-Doo 500SS MXZ TNT 2008 Ski-Doo 500SS MXZ Trail 2009 Ski-Doo 500SS GSX Sport 2009 Ski-Doo 500SS GTX Sport 2009 Ski-Doo 500SS MXZ TNT 2009 Ski-Doo 500SS MXZ Trail