I had never heard of an SP2.. But I saw it and went and talked to the guy... He said it was imported... And also told me all CF body and tank and was about 100 pounds lighter than a normal RC51 and about 20 more horsepower... This is all I know and was told so if incorrect sorry.. He said it was there for Roadracing World to do an article on it..... Heres the pics nice bike...