It may have a slight sign of blue smoke on start up after sitting for a few days , otherwise going strong, hasnt lost any power. Mostly road riding at 90 kph and below. Most oil changes been done at 2000km, with the few beach and bush rides done at 1000 km. No shim/ valve check as yet but will look into that soon. 3 or so spark plugs, on my second 14/44 sprockets with new chain. It keeps going on and on with no hassles. 3 years of trouble free motoring. Cant be happier with the ttr,