He crashed and sustained life-threatening head injuries. His 23-year-old male pillion was also injured.
Both were taken to Wagga Wagga Base Hospital.
Reports on the fatal crashes will be prepared for the coroner.
Anyone with information about any of these incidents is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au. Information is treated in strict confidence. The public is reminded not to report crime via NSW Police social media pages.
Our sincere condolences to the families and friends of the riders who passed away and our best wishes to the injured rider and pillion for swift and full recovery.