I needed to replace my brake pads and in searching the forum there were a couple of different part numbers for the rear brake pads, so I thought to get confirmation from the "horse's mouth" so to speak. This is what I got from Garry Gallagher at EBC-USA:
Thank You for your e-mail to EBC Brakes !
EBC Pad Parts #'s for your 2011 Gas Gas EC300...
Front EBC Brake Pad part #'s MXS185 - EPFA185HH - FA185R - FA185X
Rear EBC Brake Pad part #'s MXS367 - EPFA367HH - FA367R - FA367X
Thank You for your e-mail to EBC Brakes !
EBC Pad Parts #'s for your 2011 Gas Gas EC300...
Front EBC Brake Pad part #'s MXS185 - EPFA185HH - FA185R - FA185X
Rear EBC Brake Pad part #'s MXS367 - EPFA367HH - FA367R - FA367X