Manufactured by SPI Includes 2 pistons, ring sets, wrist pins, bearings, circlips, full gasket kit as pictured SPI pistons are engineered to provide the best possible path for combustion chamber heat transfer to the cylinder walls All SPI pistons, rings, pins, circlips are manufactured to OEM specifications All individual components are interchangeable with original parts Piston weight is compatible with original piston T-Moly series with Teflon-Molybdenum coating T-Moly series pistons reduce friction, resist seizure, improve durability SPI complete gasket kits contain all gaskets pictured to rebuild an engine, including oil seals with stainless steel springs for maximum performance and corrosion resistance. Made in Taiwan Pistons are for standard bore size 85.00mm Fits 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