+1 on the unbranded chain from DSS. This is on a 650 tho with the morse chain and horror of horrors a press fit joining link(no hollow points or mushrooming of the pin heads) I asked a prof chain man about the join and he said trust it.?
I have done probably 8-10,000 kms on said chain, giving the poor wee motor heaps to keep up with the larger bikes I seem to ride with. Not comparable to racing but just an insight.