Looked like less than 1/32 of an inch of pad material left. The new pads have about four times that.
From memory, one allen type guide pin. A little bit of butt required to break it loose from the factory, however the bike is close to eight years old and has over 60K miles on it. Once I removed that, I pressed the piston back in the caliper. The pads basically fell out, you just bring the pad to the center of the opening and pull it down and away from the caliper where the guide pin passes through. The spring on the Gen II rear caliper stays put, so no issues with remembering how the springs go back in like on the Gen I. You basically put the new pads in by reversing the process. the one part of the spring must be pried open just a tad to allow installation. Very easy. I didn't bother looking at the service manual, but can't imagine any big differences. If a mechanic tells you a better way to do it please follow their advise.
