1st of all, they are SENCORLESS motor....do you reallly want sencorless motor for racing? If you are only bashing and need the top speed...they are OK.
The higher the KV the faster the motor......Big name like Speed Passion or Novak also listed their KV on their site, but they use the "T" to ID the speed of the motor....and the general use that as well. See below chart and you can find out what "T" equal to what "KV"....
http://www.teamnovak.com/products/br...spec_chart.htm
Also....sensored vs sencorless
http://www.teamnovak.com/tech_info/b...ensorless.html
P.S...all the above info are from Team Novak...thanks.