I'm riding home from work and apply a little brake to turn into my road and I hear the awfullest sound coming from under the bike. It started out as a loud grinding noise that fairly quickly got softer and softer until it was all together gone. So I've now slowed to a crawl and I notice the ABS lights have started flashing so after a quick inspection I find that a bolt had worked its way out of the rear caliper(I just recently replaced my FD) and the previously mentioned grinding noise was the ABS sensor being ground to nothing against the ring. Not sure if the bolt wasn't tight enough or what I did wrong but I was shocked that the bolt backed out. So I've ordered the rear sensor but I'm unsure what the part # for the bolt is. I've looked at some fiches but for the life of me I can't find the bolt I need and I'm wondering if the bolts holding the caliper on are the same size or different? If any of you guys would chime in and let me know what the part numbers is it would be greatly appreciated. Devin