...Mayhem in all honesty I am not sure...It runs at 5800 KV which probably makes more sense to you than me...The AON test crew has been using it in different 540 situations with the MAMBA 25 esc...It takes a regular 1:10 pinion on a 3.2mm shaft...The small print on it is all up at AON ELECTRIC and you can buy it DIRECT from AON ELECTRIC...Just let them know that you read about BitHed's motor and wanted one for yourself