http://www.ebay.com/itm/NEW-ATC250R-...tWn8cs&vxp=mtr
http://www.ebay.com/itm/NEW-ATC350X-...9Wn8JT&vxp=mtr
This fella sells the RMC's for the Gen 2 and Gen 3 R's.
Thats cool!
He also has stuff for the X's.
I bought a rear brake caliper for my 200x from this fella.
I have yet to install it as a new addition to my family has halted all ATC build progress.