A Rebels motorcycle gang member has died, and his passenger seriously injured after a motorcycle crash in Adelaide's north-east.
Shane Smith, 38, and his 45-year-old male passenger crashed on Milne Road around 3am on Wednesday morning.
Police say the 38-year-old died at the scene.
His passenger was taken to hospital with serious but non-life-threatening injuries.
Mr Smith, the former partner of reality television show Married At First Sight cast member Stacey Hampton, was a father-of-four.
His death comes a week after another Rebels member, Bradley Daniele, 29, died in August.
The Rebels MC Malta Facebook page paid tribute to Mr Smith on a post to social media.
"Today marks another dark day for our club, we're all in disbelief of the passing of our Brother Shane," the post wrote.
A woman who identified herself as his sister said there were "no words to ease the pain" of losing her brother in a tribute posted to Facebook.
"I promise I will be there for the kids and make sure your memory lives on forever," the post stated.
Mr Smith was convicted in January last year for gathering with other gang members.
Major Crash officers are investigating the circumstances surrounding the collision.
Mr Smith's death is the 51st life lost on South Australian roads this year.