In Az it gets hot as balls, and we are not required to wear helmets. Just going to the store for some snacks or whatever, I don't put on my bucket. So, I've only owned my 2017 Zx6R since may, (2 mo) and when idling or riding under 30mph without a helmet, I can hear what sounds like the valves ticking. It's definitely prominent. Comes from up under the front of the tank near the clip ons. Once I get between 6k and 8k rpms theres a decent buzz like mettle buzzing on metal. Never had a zx6r before so I have nothing to compare it to. And the dealer says it's normal (of course they do). There's also a strong buzz that paces the rpms in the seat around 8k as well. Tickles my balls on the freeway lol. Could it be bad motor mounts? Loose valves? I have no clue but it's got me a bit worried. I have no mods on the bike and just under 1000 miles.