Here's a Piston comparison, Banshee ATV 2 stroke twin, 350cc stock.
A Big Bore 404cc stroker engine piston on the left, Stock on right, but joined with a common wrist pin.
Big bore dyno'd out at about 60 hp.
Illustrates how on a 2 stroke, the pistons' fuel window port timing can be shifted to make mo' horsepower. As well as piston skirt height.
Note also, Left big bore piston exhibits the classic 4 points seize from a too lean on-top at max RPM's.
Too hot piston skirt expands / swells up then seizes the engine locked up tight...........yeah unfortunately at ~60 mph on pavement, so pull in the clutch, coast to the road side.
Let engine cool for 5 minutes, kick it over and ride it home.
