I wasn't planning to rebuild the calipers. They weren't seized or leaking. When I pulled the brake lines, I pumped the lever and a bunch of crap came out so I thought I might as well. There might be a little junk in there.
Yeah, a little.
I've never seen anything like it. What a mess.
My ultrasonic cleaner is my new favorite thing.
I picked up a rebuild kit from a company in the UK (I seem to get a lot of stuff from the UK) and new Gafler lines. The master cylinder is a little tricky. Someone on the Aprilia forum repurposed a kit for a Honda but it wasn't a direct fit. It's a Brembo MC, I'm not sure why it's a challenge. I think I have an identical MC in my Ducati spares. I may just use that. Or run a bunch of fluid through the current one and see what comes out.
In other news, the guys on the Aprilia forum convinced me I'm crazy not to pull the crank and replace the seals so I guess I'm going to do that.