There was no other vehicle involved. The man who was riding the bike died at the scene.
It happened on the Rudmore Flyover, of the M275 at around 10pm on Friday, 28th June.
This was a traumatic incident and anyone who saw it and who feels they need support can contact us to get advise about who they can speak to about this.
Police are keen to talk to anyone who witnessed it about what happened or those who may have dashcam footage at or near the time of the incident.
Witnesses are asked to call 101 quoting op Cardamon.