Cameron Beard of Beard Brothers Motorcycles, which sells quad bikes, also says the regulations have forced manufacturers to think again about supplying products to Australia.

"All the major players have pulled out," Mr Beard said.

"It's not worth them changing their designs for the Australian market because it's such a small market for them."

The Australian Competition and Consumer Commission (ACCC) has introduced mandatory guidelines for quad bikes in response to rollovers in the vehicles.

From this October, all new quad bikes will have information affixed to them about the degree of slope at which they will start to overturn.

From October 2021, rollover bars will be mandatory on new quads.

Mr Beard said side-by-side vehicles are more expensive to produce and buy and they are not as nimble.

"The rules put in place are from someone sitting behind a desk that doesn't know what's going on," he said.

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The store is sold out of quad bikes and Mr Beard said he expects there will be a rush on sales prior to when rollover bars are made compulsory.

Graham Brown, meanwhile, says he could have died in a quad bike accident in 2015 just outside Orange.

"The bike was travelling at about five kilometres an hour and at that critical moment I was leaning to the right and looking over my right shoulder and the bump was on the left," he said.

Mr Brown fell off and his quad bike rolled over the top of him, leaving him with broken ribs and substantial injuries to his hip, wrist and shoulder.

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"The next day I went to the Carcoar Show and looked at a side-by-side," he said.

"They're more stable, they do have a seatbelt and they have a roll cage.

"Quad bikes are a very, very useful tool, but they are inherently unstable."

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Mr Brown, however, said new regulations are not needed and riders need more training and to take some responsibility for their actions.

At Dubbo business Work, Rest, Play, dealer-principal Chris Gibson said the Orana region is one of the largest quad bike markets in Australia.

He said with quad manufacturers not making quads with rollover bars, his business will transform its sales and service department to cater to side-by-sides.

"It's easier for them [manufacturers] to walk away from the Australian market than to redesign," he said.

In the first six months of this year, 14 people, including three children, died in quad bike-related accidents in Australia.