Michael Dunlop is to take the place of injured rider John McBride in the Phase One Yamaha team.
Manx Radio TT also learned this afternoon that he will ride his own Supersport machines in the 125 and 250 events at the Billown Circuit on Saturday.
Michael, who recently lost his father, Robert, in the North West 200 in Northern Ireland, says he is delighted to step in:
Football: Double victory for IoM men in tri-tournament
Manx side hosts Ynys Mon and AFC Blackpool at The Bowl
2027 Pre-TT Classic and Southern 100 dates confirmed
Billown meetings planned once more for late May and early July
Jamie Cringle back on Island to continue recovery
Manx rider says it's a 'long road' ahead but thankful for support
ARA double-header at Jurby this weekend
Rounds five and six of ARA Championship to take place