Originally Posted by Northern Dog
I'm gonna throw in my 2¢ worth at this point ...
I've seen problems in the past on bikes and cars where the ignition/spark would break down once you reached a certain rpm range. Have you tried swapping out the coil and/or CDI yet? ... it also may be something as simple as a faulty plug wire/cap.
+1 it`s a possibility,if the CDI is going send it to me for a free rebuild,i`ve rebuilt 7 so far in 2 months,more coming,and like i say i do it for free for guys here and at TT.....
01 XR650L,102mm JE 11.25:1
..NX650 second gear,FMX650 fifth gear,ported CW head,KW valve train,MegaCycle 173X25.FCR MX pumper.42/158 NVCT needle.Cycra probend CRM,Scott`s sharkfin,Xr`s Only casesaver.FMF "Q2",Sutton Oil Cooler,Clarke 4.0,Red XR`s Only skidplate,Doubletake mirrors,Manracks Rotopax rack..one Minature Schnauzer