La description
Piston KitTwo-stroke pistons are made from 4032 siliciumFour-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistonsBoth include 3% copper in materials for better heat resistanceAll pistons are forged using a precision heat-treatment process that allows for production tolerances of just .005mmForged piston tooling allows for the lightest available productKit includes antiwear coated piston, rings, pin and circlipsCast-lite piston.