Russell Maycock was involved in a collision with a black Mazda 6 while riding his black Kawasaki motorbike about 12:20pm on Tuesday.
The incident happened on the A97 near Kildrummy in the Alford area.
Sergeant Peter Henderson, from the road policing unit, said: "Our enquiries into the collision are ongoing and I would urge anyone who was in the area at the time and who hasn't spoken to police to do so.
"We have officers supporting Russell's family at this time and our thoughts are very much with them."