One biker had to be hospitalised due to their injuries.
Emergency services were alerted to an incident in the Mourne mountains in Co. Down shortly before 3.30pm on September 15.
The biker was treated, packaged and brought in a stretcher to the Air Ambulance helicopter and rushed to hospital.
A spokesperson for the Mourne Mountain Rescue said of the rescue: "Great teamwork from the ambulance service, NI Air Ambulance, St John's Ambulance and PSNI."
