For the quick and easy answer, The Super Sportsman Series are an original line of motors Speed Passion offered, the newer Ultra Sportsman (the ones avaiable here in the US) are a newer "refined" series so to speak, with some needed changes to be more competitive in the US market.
Originally Posted by
-KilleR-
If that the case let me rephrase my question. What is the different between the Super Sportsman Series and the new Feigao Series motor? ie. 13.5 vs 13.5.