I came off a Uly that was exactly the opposite. With the helmet on, I could hear all kinds of rattles, ticking, pinging, etc from the engine at certain RPMS over the last 3.5 years. However riding it around without a helmet on in an attempt to diagnose it, it never made a peep. Even sitting still reving it. It ended up being alarming enough, that after 3.5 years I parted with it and here I am with the Versys. My versys sounds like it has a little whine coming from the tranny.. However the engine itself seems fairly quiet, even without a helmet (the short stint I did with it) but that was not up to speed really. I can handle a little tick here and there, maybe a little whine. No knocking or loud pinging though.