Try the EBC part numbers FA261HH for front and FA196HH for rear. They apparently are the same part as for the Honda Goldwing 1800 and available at your local honda store. If not there they are available online. I got this info off the Vision-Riders website.
Fronts item # 61-0261 (FA261HH Sinter) need 2
Rear item # 61-1961 (FA196HH Sinter) need 1