Manufactured by SPI Includes 2 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 Piston weight is compatible with original piston 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 66.00mm Fits 1989 Yamaha Enticer 400 LTR ET400TR 1990 Yamaha Enticer 400 LTR ET400TR 1992 Yamaha Enticer 410 II LT ET410TR 1993 Yamaha Enticer 410 II LT ET410TR 1994 Yamaha Enticer 410 II LT ET410TR 1995 Yamaha Enticer 410 II LT ET410TR 2000 Yamaha Enticer 410 II LT ET410TR 2001 Yamaha Enticer 410 II LT ET410TR