It's been two years since the passing of acting great Robin Williams but his legacy continues to live on, this time thanks to an auction of the actor's beloved bicycle collection.

In total, 87 bicycles from Williams' collection are being auctioned off. Proceeds will be donated to two charities Williams supported: The Challenged Athletes Foundation and the Christopher and Dana Reeve Foundation.

As noted by SF Gate, Williams was an avid cycling fan, attending the Tour de France and often being spotted riding bikes around the Bay Area.

The collection donated by Williams' children features a wide range of bikes, from a unicycle to unique small bikes to a child's Schwinn cruiser. One estimate, according to CNN, suggests that the bikes could bring in upwards of $200,000.

In a statement, Williams' family said, "We hope these bikes will bring their new owners as much joy as riding them, and helping these causes, always brought him."

A polka-dotted Colnago and La Carrera Futura 2000, the bike with the highest bid thus far Image: Paddle 8

The entire collection is hosted over at Paddle 8, which also includes an in-depth look at Williams and his love of bikes throughout his life.