Vertex Top End Piston Kit - CR250R - 66.35 mm - VTK23133B

The piston is heat treated with a T-5 hardening and tempering cycle. The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life. Gravity-cast aluminum alloy (not forged) with 18% silicone content. Cast OE replacement piston. Top end kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing.