Also got my bike at 2600km with TKC80 front and Heidenhau k60 rear. The Heide was worn down so I replaced it with an E-07. That lasted almost 4000km and then the front TKC was also done. I then put on a Pirelli MT90 at the back and a Dunlop D606 in front. Both for less than the price of one front TKC. I'm on almost 9000km now and both are holding up well. The bike handles very well on tar and well enough on dirt. The front TKC80, Dunlop D606 and Pirelli MT21 are very similar but in South Africa one can buy the Dunlop and Pirelli for less than half the price of the TKC.

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2014 XT660Z - Barrett pipe, DNA stage1.5, Barkbuster hand guards and handlebars, Pivot pegs, Teknik suspension, Guard-it engine protector combo, B&B rear rack, Trax topbox.