08-06-2023, 02:19 PM
How many miles do you have on your chain and sprockets? A worn chain with a tight spot could be causing this. Put your bike on the center stand and spin the rear wheel by hand and see if you can hear any noise. If not, try starting the bike while on the center stand and carefully running it through first and second gear while listening for the noise. Does the noise just happen when the bike is in gear? Does it happen when you rev the engine in neutral? Does it ever happen when you're coasting? Is there any loosness in the rear wheel bearings? I'm sure you've checked the engine oil.