Q. I have ridden my new FZS 3.0 at 80 kmph for couple of times before crossing 500 kms, will it harm my engine and it's performance in future?

Until run in period is over, it is better to run the motorcycle at slower speeds as mentioned in manual. Post run in period it should be fine. I have a 2020 model FZS V3. Have noticed that eco indicator in speedo console goes off when we cross 75kmph speed. Feel this is the best speed in terms of efficiency and engine health. If bike is maintained well there should be no problem riding this bike for any amount of distance. Being air cooled engine it should be fine for long rides as there will be continuous flow of air which will cool the engine by natural convection.