I know we are not allowed to comment on "For Sale" adds but.... Doesn't this system learn the engine or be programable to the engine it's going on? I admit I know nothing of how this one works. I'm just asking.
I have used three sets of those pistons in the last three engines I did and they all were the same weight as the factory pistons. Piston alone is 584.5g and pin is 154.9g. No balancing was needed. Hope that helps.