Top End Piston Kit - 64.45 mm -Yamaha YZ350 Banshee
The piston is heat treated with a T-5 hardening and tempering cycle
The piston skirt is coated with high-tech Molybdenum Disulphite for faster break in time and increased piston life
The cast piston is 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