Strange rattle during acceleration

[d4n.ci]

Hey folks, currently traveling in Italy with my 850GSA.

I've noticed a couple of days ago that, when rapidly accelerating (e.g. from 0% to 30%), I can hear a metallic rattle coming from the front (?) of the bike.
When accelerating with more "pace" (for lack of a better word), I encounter no such issue.

It's a bit unsettling, and something I would not expect at all with a bike of this size and price.

Do any of you have the same thing? Is it a reason to worry and bring it to the dealership?
I've sent the bike for the 20.000 km service right before the trip, and no issues were brought up by the dealership.

  

[SnoDrtRider]

Could be the steering head bearings which were supposed to be adjusted/re-torqued at the 600 miles service.
Check and see if the cap on the top fork bridge/yoke with the 12mm allen hex in it is tight.
 
It is supposed to have blue Loctite on the threads. My 2019 never had it from the factory. That is not the only thing that torques the head bearings but make sure it is tight before you get it to a service center that can torque the bearings properly.

[Warnzie]

No expert but if when accelerating I would thing it more timing chain? What year model is your 850? Earlier models had timing chain issues?

[MitzaPCH]

Cam chain tensioner needs to be changed