These five superbikes were never sold new in America. Built for Japan's smaller-displacement racing class, these 400cc machines packed full superbike engineering into bikes most American riders never even knew existed. Footage credits for every clip are shown on-screen throughout this video. Subscribe for more machines the rest of the world got—and America didn't. #Motorcycle #JDM #GreyMarket #HondaRVF400 #HondaNC30 #ImportMotorcycles #Superbike #RacingHistory #Motorsport #JapaneseMotorcycles #onelungracing