Piston and rings
Piston showing the burned off area on the front and a bit of the area where the alu from the piston covered the rings
Piston still in the bike
Bottom of cylinder, in focus
Pic from top looking down on the power valve. Some of the worn areas visible below the ports.
Top of cylinder looks pretty good
Unhappy piston. Worn front, and whacked side.
Two of the crunched areas at the bottom of the cylinder