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.