Actually that subtitle is misleading since these two-strokes were very sans smoke and they were jetted pretty cleanly for the hot and humid test day. Out of the two SE-Rs, we rode the 300 first and thought it would be the favorite of the two-strokes. It has a smooth, torquey power that that starts right off the very bottom and pulls controllably hard through the mid. In the technical riding conditions we didn’t wring it out, rather, we were quite happy short shifting and using the torque. It wasn’t until we hoped on the 250 did we realize that 300 was too much motorcycle for start/stop/go/turn/up/down sort of trial we were testing on. The 250 was much easier to ride and be much smoother on. Rather than keeping the clutch lever in more than out like how we were riding the 300, on the 250 we could actually leave the clutch lever out and not speed out of control off the trail. Also, it was surprising that the 250’s power came on so low in the rpm range. Typically 250s have their power shifted to the mid with the bottom end being very mellow. But on the SE-R 250, especially since we rode it right after the 300, we were very happy with the strong bottom end and smooth transition of the mid-range. Overall, it was just more manageable and pleasant to ride than the bigger machine, given the tight nature of the testing loop. We would say that the 250’s motor is the better all-around platform with the 300 being the extreme enduro/hill climb/wide open option.