I’ve had my ultra 1000 HT with inverted fork and 2piston brakes for about six months now. This is my second bike with these brakes and im very happy with them. The inverted fork worked great at first but became very stiff and stopped working. I think oil leaked into air chamber causing them to get locked up. The good news is Biktrix sent a replacement right away, they are on the way and I will have it in next day or two. I’m really enjoying this bike!