Hi , My TT600r also knocks at the top end, i did wonder if it was the little end bearings, i have disconnected the advance and retard unit which i would suspect it to knock if the octane rating is low, do you use super plus or a octane aditive, also have you also had teh ADV & REt unit disconnected.
Help is much appreciated, if it helps i have a parts list on PDF for the TTR.
Cheers mark
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