Brake Rotor Size

[BretonM]

Hello all,
I would like to put some custom brake rotors on my bike.
On the same specification it says that the bike has a 6" brake rotor front and rear.
I have been trying to find 6" brake rotors all over the shop and nothing seems to even exist.
Is there a conversion to a similar size in millimetres as this is what they all seem to be set out in.
As I've stated before I am a rookie at these sorts of things, so any advice or help for future reference would be greatly appreciated.
Thanks.

 

[Tim Hall]

150mm.

 

[Crankarm]

You can put any size brake rotor on providing your bike frame or forks allow it, with of course the appropriate type of post mount adaptor for the size of rotor you choose.

 

[Banjo]

160 front and 140 back is common.