Novak three80 is the only sensored micro motor AFAIK.
If you are getting cogging you have something wrong, M8 speedo should be as close to cog free as you'll get, I've had sensored speedos in my 10th cars that cog worse.
I have heard rumours of a Losi 6000 Kv motor, though I don't know if/when this will be available.
Maybe search by size ie. 24mm diameter up to 28mm dia and upto 35mm long?
Don't forget the bigger the diameter the more torque they will produce so you can get away with lower Kv motor with a much bigger gear ratio.
28mm x 35mm 3900kv/3950Kv is a good motor and would be quicker than the kit motor.
You need to do some searching though as these motors are tough to find, especially in the UK, but they are out there.
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