I have been working on the engine the last week, so far things look good. The piston + pin is about 20 grams heavier than the stock one. Piston skirt is only slighly shorter.

While the head was off I have also adjusted the ports so they are a bit better flowing, no adjustments to valves.

Once the bike is made whole again it's off to the dyno somewhere in the next weeks for a tune.. will post some results here as well.