I have a couple of SJ4000 GoPro clones, the included bar mounts are a bit agricultural, but do the job of pointing the camera in the desired direction whilst stopping it falling on the floor.
On the decent bike, I have an out-front Garmin mount which has a GoPro adaptor underneath, which holds the camera quite nicely. I believe the one I have is by K-Edge, other mounts are available, etc...
One thing I did find handy - as the SJ4000 battery is only good for around 1.25 to 1.5 hours - is a replacement waterproof housing which has a screw-in micro-USB plug to provide power from an external USB battery pack.