Originally Posted by
fulcrum2
@Team Kamikaze
is it fact that the cnc piston improves bottom end? Just wondering, because I run Novarossi engines since many years and they changed the manufacuring process of their pistons between cnc and microcast a couple of times. Everytime they claimed that the change is an improvement...

The microcast piston is heavier and the CNC from bar-stock aluminum is lighter, and of course the lighter material helps the increase of the overall performance.