The 16-year-old set a motorcycle distance jumping mark at a Braidwood property yesterday morning.
Cheered on by a small but vocal crowd, Gilks, of Lake Macquarie, jumped 73.91m to smash the 125cc record by 6.55m.
The new mark is his third world record, after setting marks for 65cc and 85cc motorcycles before he hit his teens.
However, Guinness World Records does not recognise class distance records and only acknowledge overall distance records.
Australian Robbie Maddison holds the world record at 106.98m on a 500cc bike.
It was Maddison’s 125cc mark of 67.36m that Gilks broke yesterday.
The teenager’s dream is to break the outright distance record.
”Guinness not recognising it doesn’t worry me, because I’ve done the 65cc, 85cc and now 125cc, and everyone knows that,” Gilks said.
”It’s not all about a beer company putting me in their book.”