When I first bought mine in Oct 01 I got 190-195 kph out of it. The engine rebuild as stated in the manual should be done every 16000k, I did mine at 12500k, whilst redoing the piston and ring I also added a jolly moto sports exhaust and listening to someone that I now know doesnt know what they are talking about I went a smaller front and rear sprocket and new chain. Ever since I can only get 130k tops. I am now in the stage of planning bigger than original front and rear sprockets, new chain and a new jet for the carby seeing i have added a sports exhaust and a general tune.