Four members of the Rebels Outlaw Motorcycle Gang have been charged after allegedly bashing a nominee who "wanted to leave the club", police say.
Police will allege the victim attended a home in Edgewater between 6pm and 7pm on March 31 where he was met by two patched members of the Rebels and a nominee.
The three men allegedly assaulted the 30-year-old victim, punching him to the ground, where he was "kicked, stomped on and hit with a wooden pole".
The victim's Harley Davidson motorcycle was then allegedly stolen from him and he was threatened with further violence if he did not hand over several other vehicles including a Mercedes Benz sedan.
Gang Crime Squad detectives arrested four men on Friday and have charged them with multiple offences including aggravated armed robbery, property laundering, detaining another with intent to gain a benefit and aggravated burglary with intent.
A 38-year-old man from Edgewater (patched member), a 26-year-old man from Byford (patched member), a 24-year-old man from Camillo (nominee) and a 24-year-old man from Beechboro (nominee) are due to appear before the Perth Magistrates Court today.
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder
Premier Roger Cook to leave Kwinana electorate, move to Perth
Mandurah Marine Rescue's new vessel named in memory of nun who survived 1959 boating accident
Teen dies in motorbike crash at Waroona Dam
Shark alert issued after whale carcass reported at Preston Beach
Kwinana businesses to refuse serving students during school hours