Lesson Wiseco 86 96 Kawasaki JS650 ProLite (549M07600) Piston Kit. Classic Forged 2 stroke pistons are perfect for those looking to rebuild their 2 stroke engine with reliable, high quality components. These pistons cover a wide range of Powersports rebuilds, including vintage motocross models, classic street bikes, and snowmobiles. The forged material improves tensile strength over cast pistons, ensuring refreshed performance on the track or the trail. This Part Fits: Year Make Model Submodel 1989 1996 Kawasaki JF650 TS Base 1986 1995 Kawasaki JF650 X2 Base 1991 1995 Kawasaki JL650 SC Base 1987 1993 Kawasaki JS650 650SX Base