I don't think there ever was a GENUINE 400cc "race" bike out there (at least not in the sense your talking about). There are GENUINE 400cc street bikes out there. And there are GENUINE 400cc street bikes that have been raced, but there never was a GENUINE 400cc race bike. Hell for that matter the NSR250's everyone on this site talks about aren't even GENUINE race bikes, there just street bikes that some people race.

Now the Honda RS250, Yamaha TZ250, Aprilia RSV250 are GENUINE race bikes

now if you want to come onto the forums and troll for agruments about 250 vs 400 just come out and say it
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Charles Gallant