found an interesting article on the MVX250
http://www.mcnews.com.au/honda-mvx250f-with-phil-hall/
Same picture in the article of four of the bikes (note that someone has removed the shrouds on one bike)
[img=http://www.mcnews.com.au/wp-content/uploads/2015/04/Honda-MVX-250F-Trio.jpg
"There was another reason for the comet-like life of the MVX. The main competition for the MVX came from Yamaha’s brilliant LC model, a bike with style, clout, a racing pedigree a mile long and a raft load of companies producing hot-up bits to make it go even faster than it already did. It really was no contest.
And so the brilliant little MVX, Honda’s first two stroke road bike, came and went and its passing went virtually unnoticed"
[/QUOTE]All shrouds seem to be present, though some tea leaf has nicked the engine from the bike at the back.
The NS400R took the same engine technology and ran with it. Apart from a full reversal of the race bike engine, the pedigree is there. I can't remember if ****logising was the reason for a road going version though, ala the other manufacturers.
Engine detail from about five minutes in.
https://youtu.be/WK1vUduVAVw
The con-rod issue was unforgivable to a consumer product though, and Honda had the VT250 as a worthy alternative, making a triple 250 stroker a design exercise rather than a serious new line. I wouldn't have minded trying one out though.
By virtue of the cylinder porting and captive piston rings, the two stroke is always going to be higher maintenance than the nearest four stroke power plant, and to leave any multi-cylinder block parked up for any length of time with fluids inside kills them stone dead.
But I digress, Honda spent many months working on enclosed discs for bikes, stuck it on a few models for a year or two, the public went meh when presented with bills for periodic servicing, and it was dropped.