250 2stroke.
I like building them. Well rebuilding them. The RS250 has the same engine as the RGV250. Both are supplied by Suzuki. (Just like Polaris snowmobiles.) The RS looks tons better, but is built a whole lot more complicated. The RS has a few "miles" extra of tubing. The NSR I think is a whole lot better machine. I prefer the MC28 series. Probably because these were the first 250's I've built. The MC21 is identicle except for the swingarm and the CC-ignition system. The MC28 looks a lot more exotic and if you have the right cc you can up the HP. If I remeber correctly you have a -10, -30, & -40. With the 40 being the race card. I forget the HP difference in the card, but there is a lot. You have to do some splicing on the wiring harness and instrument cluster to get the race card and lights to work at the same time. With my fat azz, I have had it going around 120 MPH on the highway topped out. Although I can't be sure since the race card doesn't display speed.
RS250s are great bikes, turn on a dime and are very flickable. One kept passing me in the corners when I was on Hockenheim Ring. Talk about disconcerting. After he'd caught up to me on my Gixxer, all he had to do was late brake and keep the corner speed. I'd pass on the straights, he'd get me in the corners.
T