Sorry about the stupid question but never having had a rear disc brake before - if I have a wheel with a 155mm rotor on it, will that fit most rear disc calipers on standard IS mounts - how does it work?
As I'm sure all rotors aren't the same size at the back and I have seen conversion kits for the larger rotors, but what is the standard rear rotor size?
As I'm sure all rotors aren't the same size at the back and I have seen conversion kits for the larger rotors, but what is the standard rear rotor size?