I read all the info on the KTM`s, the exc is wide ratio transmission and the mxc is close ratio Transmission. The exc has lights and the mxc has no lights but a battery and wiring to add lights. I read mr know it all of dirt bike magazine and he says you should get a MX bike if you want to do jumps. I saw a 2001 400 MXC so I bought it and I love it, after I wear out the off road knobbys I intend to get the best road legal knobbies and add the lights, brakes, horn etc. Its already too late because I alrready own the MXC, but why so many people praising thier EXC`s, I don`t intend to be a MX champ at 50, but my youngest son is getting into MX and I would like to also race while I`m at tje tracl. A few weeks ago I say a vet on a mxc 520 beat everyone off the start and do medium jumps and on every straight away gain on all the 250 two strokes, after 5 laps he was 100 yardsd ahead, just fast not fancy, some of the 250`s put on quite a jumping show I might not win but at least I won`t be last. anyways why so many EXC`s???