[SV650rules]

Ultimate and such does work because it has more cleaners, but in my experience Redex works very quickly. I tried 97 RON in one carbed bike and it actually ran worse (there is actually less power contained in high octane fuel and it is only if ECU has knock sensors to optimise spark timing that an engine can get better results). Our Honda cars like high octane because they have compression ratio (11:1) and ECU / knock sensors to take advantage of it.