Enquiries have so far established that a Yamaha motorcycle collided with a parked Ford Kuga on Manchester Road in Mossley, near the junction with Mill Road, at around 8.05pm on Friday night (September 16).
The rider of the motorcycle was taken to hospital with serious injuries.
His family have been informed.
Anyone with information should contact investigators via 0161 856 4741 quoting 3026 17/09/22.
Information about crime can also be shared anonymously via the independent charity - Crimestoppers - on 0800 555 111.
