The sound that you are hearing is coming from your spokes, please check for any loose spokes and tighten as needed.
It's fairly common for your spokes to need some adjustments during the initial break-in period and they should be checked on a regular basis after that as part of the normal maintenance for your bike.
Please be careful to not over-tighten the spokes as this will cause your rim to lose its trueness.
We recommend having a local bike shop do it for you if you're not familiar with the process.
To tighten the spokes yourself, you'll need a spoke wrench like the one linked here.
I've also linked a video tutorial on tightening spokes here.
Please sign in to leave a comment.