Can a monitor arm for 49 inches hold 57 inches?

I want to get a MSI MPG MT201R V2 Monitor Arm but it’s advertised for 49 inches. It has a load capacity of about 44 lbs (20kg), and 57 inch g9 weighs about 34lbs (15kgs) without the stand. Would the extra length cause stress on the stand? Will I have problems attaching the monitor to the stand?