Manufactured by SPI OEM style piston kits Includes 2 pistons, ring sets, wrist pins, circlips 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 Pistons are for .020 over bore size 73.50mm Made in Taiwan Fits 1987 Yamaha Exciter 570 EX570 1988 Yamaha Exciter 570 EX570 1988 Yamaha Exciter 570 Deluxe Electric Start EX570E 1989 Yamaha Exciter 570 EX570 1989 Yamaha Exciter 570 Deluxe Electric Start EX570E 1990 Yamaha Exciter 570 EX570 1990 Yamaha Exciter 570 LE Electric Start EX570E 1991 Yamaha Exciter 570 II EX570 1991 Yamaha Exciter 570 II LE Electric Start EX570E 1992 Yamaha Exciter 570 II EX570 1992 Yamaha Exciter 570 II LE Electric Start EX570E 1993 Yamaha Exciter 570 II EX570 1993 Yamaha Exciter 570 II LE Electric Start EX570E 1993 Yamaha Exciter 570 II ST EX570ST 1993 Yamaha Exciter 570 II SX EX570SX