Ethan started training when he was three years old and gained inspiration from his mother and father, Jason, 35, who are both coaches and competitors in martial arts.
Mrs Owers added: "Ethan will go on to the next stage now and work towards his second dan in blackbelt and maybe take part in light contact competitions.
"We have just left the choice down to him. We don't force him to do anything. He has a real passion for kick-boxing and trains four times a week.
During a four-hour grading session, he completed a range of exercises including 100 press ups, star jumps, sit ups and squat thrusts at Dartford's Combat Camp UK gym.
His mother, Kelly, 27, said today:
– Kelly Owers, Ethan's mum
We are really chuffed with him. It was hard work, particularly as he's so young and so small, but he's thrilled at what he's achieved and he just hammered it.