Get the JD jetting kit here from crf's only
The FMF Q4 with the Megabomb header is a great choice. Slight increase in power but yet is still pretty quiet. Theres also the new FMF factory 4.1 system with the megabomb header which increases power but also costs a lot more!
"If you don't crash, you ain't goin fast enough"
"The faster you go, the smoother it gets. (Unless saying #1 comes into play)
2009 CRF250R (mine)
09 CRF250R (brothers)
08 CRF250X (dad)