Hello there,
I am after buying a 4kam video recording system. I dont really know if it is good or not but it is one of the cheapest decent ones.
They supply a roll bar mount but they need to know he roll bar diametre.
Can somebody help me by telling me the dia of an indy roll bar because my car is in another country at the moment.
Also is anybody here which have used this system so it can give me some feedback about it?
Big thanks guys!

the dia of a roll bar is 50 mm I called MK thanks anyway