6S Revo just showing off -Pics-

[Sammus]

RCM mount doesn't - I run it with an XL. It doesn't need all that extra room for the clutch setup etc.

And Tekno even say in their write up of the conversion that you can use the XL motor, so maybe you do have it mounted in the Low CG position as lincpimp says? Then again when they say it works with the XL motor, they don't mention using the RCM heatsink with it too which could add a few mm to it.