Manufactured by SPI Includes 3 pistons, ring sets, wrist pins, circlips 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 T-Moly series with Teflon-Molybdenum coating T-Moly series pistons reduce friction, resist seizure, improve durability Made in Taiwan Pistons are for standard bore size 81.00mm Fits 1998 Arctic Cat Thundercat 1000 1998 Arctic Cat Thundercat 1000 Mountain Cat 1999 Arctic Cat Thundercat 1000 1999 Arctic Cat Thundercat 1000 Mountain Cat 2000 Arctic Cat Thundercat 1000 2000 Arctic Cat Thundercat 1000 Mountain Cat 2000 Arctic Cat Thundercat 1000 THC 2000 Arctic Cat Pantera 1000 2001 Arctic Cat Thundercat 1000 2001 Arctic Cat Pantera 1000 2001 Arctic Cat Mountain Cat 1000 2002 Arctic Cat Thundercat 1000 2002 Arctic Cat Mountain Cat 1000