Quote Originally Posted by spideyrdr

The R6 falls in the middleweight class and can race up - that is to heavyweight and (I think) open. But you cannot race down, so if you were racing an R1, you can only race in heavyweight or open races.

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+1 on racing the R6 to start with.


But to Clarify the above quote:

An 04' R1 can only run in Novice GTO, Amateur GTO, Open Superbike and Supersport, ROR GTO, and Open Endurance. An R1 cannot run Heavyweight.