
Originally Posted by
Disco Dan
Do you notice a sort of banging sound at idle? that disapears when the revs are above idle?
If that is your sound, dont worry. Mine does the same (we have same motor) and its apparently some bearing that has moved ever so slightly and is clunked into place when revs go up over idle. common as with gpx and zzr apparently...

Yeah that bottom end knock is just a noise the GPX's make, I thought bad when I first heard it on mine but they all do it.
"I'm gonna get to the bottom of this, and I dont give a fuck if you're at the top!!!"
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