According to Police Scotland, the 27-year-old man was travelling west on the A75 St Fillans to Lochearnhead road, skirting Loch Earn, on a black Kawasaki ZXD7F when the crash happened at around 7.50pm on Wednesday.
Police have said the man was pronounced dead at the scene a short time after the incident.
In a statement released on Thursday morning, police sergeant David Marr said: “Our thoughts are with the family and friends of the deceased at this time.
“We are conducting extensive inquiries into the circumstances of this incident and are appealing for anyone with information to come forward.
“If you were in the area and witnessed the crash, or have any potential dashcam footage which could assist our investigation, please call police on 101, quoting incident 3199 of September 1.”