Chris Patrick said the dirt bikes went missing from their home sometime between about 4.30am and 6.30am on Monday, September 7.

Five weeks later, Mr Patrick said it remained frustrating and heartbreaking to hear the recognisable sounds of the bikes' engines speeding around the East Dubbo area from which they were stolen.

Residents had taken to social media to report seeing and hearing the bikes, and Mr Patrick had several sleepless nights after being woken by motorcycle engines in the early hours of the morning then driving around in an effort to find the stolen bikes.

The Yamaha YZ250 and larger YZ426 had been wheeled out of the yard that morning, Mr Patrick said, leaving just their stands in the yard.

"They (the thieves) didn't need a key, they were kickstart bikes," he said.

"As it turns out I've found these were among a few that were stolen around the same time, mostly Yamahas and kickstart bikes.

"The day after they were stolen, we heard of another Yamaha being stolen and then since then I'm aware of another three or four being stolen."

Mr Patrick was thankful to the numerous residents who had reported sightings and urged them to continue to provide information to police.

"The police have been out looking for them and we really appreciate how hard it is to catch the thieves because they're mostly out at night, they're dirt bikes so don't have lights, and cars can't follow them through paddocks," he said.

The double bike theft was a kick in the guts for the retired paramedic who had spent decades selflessly serving the community, and for his teenage son who Mr Patrick said had worked hard to save money for his bike, only to have "his pride and joy" stolen.

As a paramedic Mr Patrick had also been no stranger to seeing and treating injuries caused in high-speed motorcycle crashes, and it was of concern that not only had children been spotted on the stolen bikes, they were often riding without helmets.

"Not to mention what happens if they hit an innocent person while they're speeding around," he said.

The family had been left thousands of dollars out of pocket, Mr Patrick said, but getting the bikes back might help restore his son's faith in humanity. Meanwhile he urged members of the community to report to police any information they had, however small.

"Somebody knows something, and it's disappointing that no one has come forward to identify who's responsible," he said.

"If someone's child comes home with a dirt bike, they need to ask where it came from."