I have a 2011 Fatboy ABS 1500 miles. I have just started to notice a noise from the front disk brake, it is like a buzzing or rattling sound. First time I heard it was at about 1320 miles. I took it in to HD and they test rode it and it never made the noise. They beveled the front edge of the pads on the front brakes. Did not hear it on the ride home. Did on next 2 rides. It happens at slow speed like when I slow for a turn or stop. Seems to only happen if I ride for about 45 minutes or longer, never heard it other than when I slow almost to a stop or turn. I did a search on here and kinda sounds like this is normal. I don't think it is my ABS, I don't feel any pulsing or any thing and I am going very slow when it happens. I do still have stock exhaust. HD said I can bring it back in and see if they can get it to happen when they test it.