Robin Williams -- Wife and Kids Still Fighting ... Over High-Priced Bike Collection

Robin Williams' widow and his three kids are still warring over his possessions, including his super-expensive collection of bicycles.

The attorney for Susan Williams, Robin's widow, was in court Friday morning ... asking a San Francisco judge to settle the remaining property disputes with Robin's 3 children ... Zak, Zelda and Cody.

Robin was an avid cyclist and owned dozens of bikes when he died. It's been reported he spent more than a million bucks on the sport. Some of his cycles were extremely rare and worth tens of thousands of dollars.

The attorney for the children says Robin's will is clear about who should get what ... and doesn't think the court needs to intervene.

Both sides will meet next week in a last ditch effort to settle the matter without the judge.