The XL Martial Arts student has won the Junior Australian championships and titles in the British championships.
McVicker is now training a couple of hours each session, three to four days a week, as he prepares for the world championships in Kuala Lumpur next month.
His father David said Max had been involved in muay thai for seven years and wanted to be the world champion for his age.
The family are trying to raise $3000 so McVicker can compete.
Visit the XL Martial Arts Facebook page for more information.