[gimpygolden]

Disregard the above post, those mods are only "needed" on a Mamba Max "MM" esc and not required on the Monster MMM
For the pinions Mike sells them here
http://www.rc-monster.com/proddetail...nion5mm&cat=40
or you could use Novak, Robinson or Century
I don't have an E-Revo (yet) but I'd imagine as long as you keep your slipper functional 32p gears are fine. You can always upgrade if needed.