just buy a new one.. weekly i havee to say it, they dont last forever, if you cant afford a new one you cant afford to run one. second hand kits need at bear minimum new rings... then you get half the use out of it.. fact is the only reason anyone would have a spare used kit lying about is if they nicked a bike wiht one on. i see NO reason for somone to take a barrell off an engine and fit a new one unless its fucked.
i can do... crossers are prittymuch max tunned for track use tho.. the works bikes are more powerful than the factory tune altho this is down to the indevidual rider.. most of the time more power on a crosser means more time in a lap as the more power you have the smaller the spread of power.. put bluntly it will be m,ore likely to wheelspin, will create more power at high revs and less at low revs (kind of shit out the corners) and you need to use the cflutch alot more wich will alsow wwear.. i have a ported crosser, useless on a track, but great fun for fucking about on. decide what you want the bike for as like i ay, there already at the max state of tune youy really want them ofr all round riding
