I mounted my GoPro Max on my buddy's bike. The stabilization is amazing. Those old Brit bikes shake. It's on about an 6in arm so it's moving around. But the camera compensates for it. Also the microphones on this camera are astounding. The camera is sitting right in the wind and you can barely tell.
Here's another video with the camera mounted on the Guzzi. It's on a long 12in arm and again it's moving and vibrating.
If you use an external microphone make sure you use a dead cat (fuzzy cover) to reduce the wind noise. Which camera are you using?