Originally Posted by Krio

Most people are running the 4000 kv Pro4 over the 4600. Unless you are always at a giant track, the 4000 has enough power for the lighter SC10 4x4. Nothing wrong with the 4600, but you will be overpowered at the indoor tracks.

With the 4 pole motors I consider a clutch basket or Garodisks, full sway bar set, and something to stiffen the chassis (tube, CF brace, AL center chassis, etc).