Piston Kit Yam D57 95 For Big Bore S4C05800001BCast Lite Piston KitManufactured by using advanced production technologies Athena cast pistons, besides being lighter, represent the best solution in terms of price, performance and reliability Using alloys with a high silicon content, it is possible to reduce the thermal expansion rate to which the piston is subjected during operation, ensuring a reduced piston to wall clearance and high performance over time These pistons are treated with a