What's the mileage?.. but on general overview lifespan of motorbike engine is 5 years before it needs to have some overhaul.. (either top or whole engine)..

An earlier batch of ER6n with their 650cc tend to be abused due to mindset of Malaysian think buying a superbike instead of street naked bike...

However, if you really keen bring the bike to a reputable workshop for mechanic to assess, or at least bring some of your friend who have knowledge on motors

im planning to get a new one. i heard from the bike shop owner that new 2009 model no longer has that shakiness. max speed only 180kmph??? wat i hear was it can go more than 200kmph average. Thatz the reason I wanted to get the bike in the first place. Cheap and fast for long distance. Can go cruise back to Ipoh with avg 200-210 speed. U sure about the top speed?

210km/h all the way?

Go find extra money to buy a ZX10R.

Then go buy life insurance gao-gao coz ur family will need it when you wrap your bike around the highway divider.