Manufactured by SPI Pistons are for standard bore size 85.00mm 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 2003 Arctic Cat Mountain Cat 900 carb 2003 Arctic Cat ZR 900 carb 2003 Arctic Cat ZR 900 Sno Pro carb 2004 Arctic Cat King Cat 900 carb 2004 Arctic Cat Mountain Cat 900 carb 2004 Arctic Cat Mountain Cat 900 EFI 2004 Arctic Cat ZR 900 carb 2004 Arctic Cat ZR 900 EFI 2004 Arctic Cat ZR 900 Sno Pro carb 2004 Arctic Cat ZR 900 Sno Pro EFI 2005 Arctic Cat King Cat 900 carb 2005 Arctic Cat King Cat 900 EFI 2005 Arctic Cat ZR 900 carb 2005 Arctic Cat ZR 900 EFI 2005 Arctic Cat ZR 900 Sno Pro carb 2005 Arctic Cat ZR 900 Sno Pro EFI 2006 Arctic Cat King Cat 900 EFI 2006 Arctic Cat ZR 900 EFI 2006 Arctic Cat ZR 900 Sno Pro EFI