Hi ducatijim, Im interested in getting a few more ponies out of my 09 KLX 250 and am looking at getting a Dynojet kit from the states and getting a header and muffler from cycleworks in Levin. What Mods have you done to yours and where did you source the parts? Also have you drilled out the crankcase breather? I have read a bit about it but not sure whether the gains are worth the potential risk if you end up upside down for a period of time. ...