Wow Pete, thought this was a discussion, not a crucifixion. Sorry I referred to 30, should of said “a while and still haven’t used my helmet” although I still think it’s a good idea to have! The $100 was for a used second rear caliper and master, sorry again, didn’t know we were talking”frt brakes”. I’ll let you much more knowledgeable people Pete, take over. Sorry for stating my opinions in such an amateurish way.