Yeah, there are 3 of them out lately featuring a black guy who stars in other vids with his real dick and then the 40cm fake one on him for these 3. The guy's dick is actually average size and there are some Japanese porn guys who have bigger than him.
It's really just silly because I am sure they could find some Mandingo-sized brothas in japan with the real deal to do these vids. Maybe the women feel more comfortable fucking the fake ones?
Alot of the older JAV interracial vids had Mark Anthony, Wesley Pipes and Lucky Starr and some of the more daring studios like Natural High and Dandy get some of the bigger brothas like Justin Long, Shorty Mac lately. But the core group of bros in Japan getting the JAV work have smaller dicks than some of the Japanese guys.
Here is a link to one of those fakes-
DMM Adult [h_127ysn00155] Video PPV