Second robbery in two months devastates motorbike shop

The operators of a motorbike shop in Adelaide's northern suburbs have expressed their devastation at being targeted by thieves for a second time in two months.

CCTV captured the robbers kicking at the shop window and smashing their way into the shop's showroom in Gepps Cross at around 4.30am.

The group of three rolled out with two Kawasaki dirt bikes from the shop, worth around $15,000 each.

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"I have no words. I don't understand why somebody would do that. We work really hard, we support 14 employees and it just guts us all," owner Charlee Byles said.

The thieves seemed to be unable to start one of the bikes and left it behind.

Five other bikes were also damaged during the break-in.

The car the robbers used to get to the shop was found abandoned and torched in Osborne hours later.

It was a Holden sedan which had been stolen from a Plympton Park car yard on Monday night.

"It's just a bit disappointing that somebody in the community can do this to a family-run business in the COVID times," Ms Byles said.

The shop had just recovered from a similar robbery in late November.

"We only just got the doors fixed two weeks ago from the last break-in. Probably over $100,000 damage from a little four-minute break-in," Ms Byles said.

"It's heartbreaking.

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"I don't know what else we can do, we've put in a lot more security measures, we've put roller shutters in, they still manage to get in. I don't know what else we can do."

The stolen dirt bike from the second robbery hasn't been found yet and was last seen in Wingfield.

Ms Byles is urging anyone with information to come forward and tell police.

"If somebody's seen something, if they can turn them in, we need to start making examples of people."