Not bike specific, but I've often used the versatile Manfrotto super clamp on a bike. Due to it's versatility it's possible to get some great angles not just by mounting on the handlebars, but on the forks, seat and chain stays. You'll need to hook up a camera. I wouldn't/haven't used a ballhead with a super clamp in this context; bikes and cars. In my opinion a ball head isn't designed for that type of load.
There are a number of options from Manfrotto including studs and platforms:
B&H have a good selection My preference is
this solution from Manfrotto which also includes a camera platform. I've used this combination with a pump cup at over 280 km/h. It's solid, while flexible enough to allow creative positioning. It's also secure providing plenty of places to fix a lanyard and additional gaffer tape.