The videography looks awesome. Most of my experience is in live TV production which can be very picky. Keep up the good work.
Positive feedback:
Nicely shots
I love the variety of aerial and FPV style shots.
Many other things you got right that I would only notice if you had got them wrong...
Negative feedback: (because that is how you get better)
For gimbled shots, try to avoid pan/tilt aliasing. This is when you can see individual pan or tilt movements within a combined move. It is hard and takes lots of skill to get right and I think you did a good job avoiding this. Even the pro Jib camera operators get some now and then with their $5000 moving heads.
More switching between FPV helmet cam and aerial footage without time cuts would look awesome. (there is the live production side of me talking)
It would be awesome to hear those bikes make some sound mixed with the soundtrack! This unfortunately takes a separate set of quality audio gear to accomplish. Video production that puts the viewer where the camera is both visually and with sound has the highest production value.
Those are the only three things that I can think of that you should work on. Some might want more camera stabilization, but as long as the viewer doesn't get dizzy the shake as you shot it actually conveys a small portion of the experience of riding. Over all, the video is shot very tastefully. I wish I had the gear to do stuff like that! Sadly all of my stuff is stuck on the ground right now.