Saw this posted on YT a day ago - not sure how old it is but thought it was worth embedding here. Some nice V4's among other things and the old RC181 sounds amazing!
The NSR's were so sick. The 250 V4 2 stroke with about the same HP as a VFR and only 211 lbs. The 500 was a fire breathing monster and the racers of that generation had huge nads. Number 46 was on the bike.