Product review (2 stars): Bummer.
There's no real reviews so I think I should chime in as I purchased my Osmo specifically to use with this attachment. While it does have a built in shock absorber, it only assists with the vertical movement, not the horizontal. I've used this with a road bike in an urban environment, and taken the bike through many different types of terrain and unfortunately the bike mount doesn't do a good enough job to be usable in combination with other Osmo footage. Shot from hand or a car it looks perfect, but once its on the bike it still picks up vibrations that you can clearly see. Even worse, the horizontal shock of hitting any kind of bump, even a tiny sidewalk crack, really jogs the camera and it looks just awful. Very similar to a GoPro when it's mounted to a bike.
If you hit any kind of slightly major bump, the camera is thrown out of orientation and drops, completely defeated. The motors in the Osmo aren't strong enough to withstand any kind of impact so it just fails over and over.
The only positive thing I can say about this product is that the build quality is that of the other DJI products. Except that 3 of the 4 screws holding the rosette in place fell out, on their own, lost forever, leaving the device unusable as the camera cannot stay attached.