Rollbar Mount
This adjustable rollbarmount is designed to be clamped onto any round material (or semi-round) pipe, tube or bar up to 50mm.
As this is a purpose built mount it is acceptable for trackdays. The 8mm thread will fit into any camera with the standard thread (1/4") on the bottom of the camera which means that you can use a standard camera with this also.
Combine with the for a bombproof lense mount!