With all of the 21.5 choices I was confused & didnt know where to go.

I did all of this last year in my M06R, and i just bought the motor with the Highest KV rating.

At the time is was the revtech 21.5 @2500KV.

Soldered it up to a LRP stock spec v2, maxed the endbell timing, and

Used a 2s revtech 65c battery 8.42v at full charge

ITS a missle. I dropped the 20t pinion for the 18T(our track is smaller)

Hope this helps those looking.

Also the d3.5 & killshot 21.5 I believe have more Kv that the revtech.