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I just fitted some new downpipes after the original ones rusted through. Just started it up for first time and there's quite a bit of bluish smoke out of exhaust. Is this normal? If not any ideas what it is?

Take it for a good long run. Its probably been sat for sometime n theres moisture trapped, you also dont know how the previous owners bike ran so could be some oil deposits in the exhaust.

Thanks for the reply.

I left it running for a while and seemed a little better. Will take it for a run tomorrow when the fairing is back on.
It is my bike and hadn't used it for a couple of months before fitting the pipes. Would it be cos they are brand new stainless ones?

Yeppers, it will be all the crap burning off, dont worry about it unless it is still happening next week