cdi

I just did a high compression piston and bigger cam. I'm going to be tuning the carb and noticed nobody talks about adjusting the ignition timing. I'm assuming most bikes of the '06 vintage have some sort of HEI distributor-less ignition system but can someone give me more info on how the bike...

Looking for a used 07-11 wr450f ecm unit. If you have anything please send me a pm. Thanks!

Hi guys! I have problems with finding such topic here so I'm starting a new one. I have a 2004 Yamaha WR 450, just bought a 2005 complete engine (for sale) and a CDI with it. The CDI i need because mine went bye bye. The question is, will it fit? Only one symbol on OEM part number is different...