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Message: [QUOTE="duke, post: 270256, member: 16522"] Apples and oranges really. A 2 stroke, in an MX bike, offers power that is more aburpt, hence the reference to them being light switches: all or nothing. Actaully, thats a misconception since the advent of power valves, but in comparison it would appear that way to someone with no 2 stroke expereince. Especially if your 4 stroke riding has been aboard DR and XR type bikes. A 2 stroke will achieve aits optimum power much more quickly and allow you to recover from loss of momentun more quickly then a heavy, slow revving thumper. But in techincal terrian where there is little traction, the sudden power being transmitted to the wheel can make things precarious. You deal with this problem by either adding a fly wheel weight or short shift the bike. Also, power is controlled more by manipulating the clutch then on a thumper. You might want to scan the riding techiniques forum on this site for more detailed examples on the differences. Haviing ridden both on a track, desert, and woods, I can say that it depends on the terrian as to which is superior. Now some 2 strokes offer a sort of "thumper" like power delivery. KDX 200/220 and some of the big bore KTM's: 300/380 are examples. In essence the power is more linear and electric. [/QUOTE]