A Hells Angels bikie gang member accused of attempting to extort money from a luxury car dealer in Burwood has been denied bail, despite pleas for release so he can celebrate his marriage on the weekend.

The lawyer for Mostafa Jouayde, 30, from Granville, told Burwood Local Court this morning his client should be granted bail so he and his wife, Susie Arida, could host a $32,000, 250-guest wedding ceremony at Lidcombe on Saturday.

George Thomas, the lawyer, said they had officially married in September last year in a small religious ceremony, but were yet to celebrate the union.

"They have already paid the hip hop artists, the magicians, the Lebanese band," Mr Thomas told the court.

"The $6000 deposit for the bar ... the wedding dresses, the bridesmaids' dresses," he said.

But magistrate Christopher Longley denied Mr Jouayde bail, despite an offer of $20,000 surety.

Mr Thomas said the prosecution case against Mr Jouayde was weak.

"I would go so far as [to say] a complete wrong charge," he told the court.

Police allege Mr Jouayde was one of five men who went to racehorse owner Terry Mullens's car dealership on Parramatta Road yesterday afternoon and demanded money.

All five men have been charged with attempted extortion and participating in a criminal group.

They are also alleged to have been involved in stealing four luxury cars from the dealer on Thursday before returning them undamaged less than two days later.

Mr Thomas said his client went to the car dealership on Saturday to "negotiate" with Mr Mullens over the trade of a motorbike for a BMW.

My Jouayde is president of the Parramatta charter of the Hells Angels.