19-time T.T. winner John McGuinness will not be competing in the Leightweight T.T..
Phil Morris Racing and RLR Motorsports were developing a Honda CBR 500R but say a potential race winning bike won't be ready for T.T. 2013.
They say they have simply run out of time to competively take on the leading Supertwin contenders.
McGuinness, who is celebrating his 41st birthday, will be in action for the Honda T.T. Legends team in France this weekend at the opening round of the World Endurance Championship - the 24 hour Bol d'Or race.
Athletics: Island trio impresses on world race walking stage
Sidecars excluded from Southern 100
Football: Draw made for 2026 Paul Henry Gold Cup
Jamie Coward happy with progress so far on TT return
