sproket

hi im running 14 48 sprockets atm could someone let me know what the best sprocket setup is for single trails hill climbs and rocky terrain log hopping no fast riding well not 170km hr let me know what you guys have done that has been successful thanks:unsure:

hello every one, im rebuilding my 2003 650 engine, in replace my worn bearings i need to remove the lower cam chain sproket of the balance weight shaft. i have tryed heating it up and using a puller but is tighter than a ducks ***, anyone know of any tools i can use or tips to get it on. thanks al