The Fourth Reich outlaw motorcycle gang (OMCG) clubhouse at Albion Park was searched where 35 alleged members were meeting at 8:00pm on Thursday night.
Two police strike forces, Strike Force Raptor and Raptor South, the dog squad and the public order and riot squad conducted the raid.
Cannabis, offensive implements, an imitation firearm and Fourth Reich OMCG club colours were seized in the searches.
Three people were booked for consorting and 32 people were issued consorting warnings.
Thirteen defective cars and motorbikes were uncovered and 14 traffic infringements were issued.
Police also discovered potential gaming and licence breaches inside the premises.
The search is part of ongoing investigations targeting criminal networks in the Illawarra and NSW.
Further investigations will be conducted into how the property was used, including potential declarations under the Restricted Premises Act.
Strike Force Raptor is made up of an elite team of police officers.
It was formed in 2009 and has been honing in on the NSW feuding bikie gangs and serious organised criminal activity.
Anyone with information about the club was urged to contact police, who said the raids were months in the making and would make the community safer.
Superintendent Dean Smith said they were about disrupting groups who wanted to engage in violence, drug dealing, and any criminal activity that made the community less safe.
"Investigations are proactive in nature and intelligence driven," he said.
Police have not elaborated on what violent behaviour had occurred between rival gangs, but said members of the public had not been involved.
"Conflict is group against group, direct conflict with each other, it is not about conflict in the community or generally," Superintendent Smith said.
"These activities are to make sure that we are highly visible, highly present and in the faces of those groups involved in those conflicts.
"It's not uncommon for OMCG members to come into contact with police, we tell them the reasons why we are there and the compliance last night was fine."