Gransport Front Brake Discs

Zep

Moderator
Messages
9,110
I would say that in my experience both versions of the disc have countersunk edges to the drilled holes.

My previous understanding is that the difference between the 550 and GS discs is the number and size of the holes and many have considered them interchangeable up to now. So the cheap(er) ones would be the ones I would go for.