Take the stroke (43.5mm), multiply it by 2 (as it's going up AND down), times that by RPM and continue calculations.
e.g., at 10,000 RPM, the piston is moving 870,000 mm/min or 2854.33 FPM (feet per min).
at 15,000 RPM, the piston is moving at 1,305,000 mm/min or 4281.5 FPM.
The big question is WHAT EFFEN DIFFERENCE DOES IT MAKE?!?!?! The bike is designed around a specific redline max RPM. It's not going to exceed tolerance before that point.