Three vehicles were stolen from Formula One Car Supermarket on Glasgow Road. late on Saturday night.
It appears that two vehicles were initially taken, with one being abandoned, before the thieves returned to take a third.
The abandoned car has since been recovered by police.
The remaining two vehicles are both Ford Focus STs – one white, one blue – with registration plates BT13 WYC and YC13 EAF.
CCTV caught a close-up of one intruder during the night of one individual wearing a hood and a mask.
The showroom gate was also damaged as the thieves moved it to get the vehicles out.
Lee Sinclair, director of the family run firm, appealed for help to trace them.
He said: “Any information would be greatly appreciated - pass it on to Police Scotland, and hopefully we can get hold of the characters who broke-in to us.”
The company has been in town for about 17 years, and has been heartened by the support of the community in the wake of the raid.
Mr Sinclair added: “We’re all gutted that people can target a local business like this and the impact that this has on us.”
Police inquiries are on going.
The car outlet is still open for click and collect.
A Police Scotland spokesperson said: "We received a report of two vehicles stolen from a dealership on Glasgow Road around 6.55am on Sunday, February 21.
"The vehicles were stolen sometime overnight between Saturday, 20th and 1.30am on Sunday.”