.......My rear caliper rebuild and master cylinder rebuild kits arrived less than 48 hours after I placed the order. I rebuilt the rear caliper. Perfect! The actual rubber seal and the dust seal appeared to be of a higher quality than the OEM that the kit replaced. Caliper works smooth as silk. Haven't done the master yet. Although the kit has all of the right parts to do it. I don't see a need to go anywhere else for my motorcycle brake needs. Brakecrafters has a new lifetime customer. I tell everybody too. Thanks Brakecrafters. P,S. I even e-mailed a tech question to these guys and they responded almost immediately and answered my question.