QUOTE(Calvin.K.B @ Mar 9 2009, 09:40 PM)
Ok then charge...i'll take it!!!haha include chain right?thanks man!!!!!yes!!! I think me and bizzy will take it from u mostly on the coming sch holiday...that is between 14-22 of march...hmm...where do u suggest we go install this sprocket?i wan fix mu broken meter gear too .....
That bike shop we went last time. Bee Hock Motor. If you can get cheaper labour charge for sprocket, go for it

QUOTE(rainingzero @ Mar 10 2009, 11:09 AM)
i have some sort of question here, my bro said that backfiring exhaust will cause damage to piston. is it true?? he said it will cause hole on the piston. my bike got some sort of Pom pom sound, but its actually very seldom. I am a bit concern on this too coz my bro was a mat rempit while he is young and this is my 1st time heard that type of damage too....
It's not exactly backfiring. It is due to very hot temperature of the exhaust pipe. It happens to me when I changed to NOB1 SSS with removed air filter.
Why the temperature is HOT?
It's because too much air going into the engine, with limited fuel. So the air/fuel mixture is slightly lean. Lean mixture will have more complete combustion, hence the engine will turn hotter. If the mixture is too lean, there are a lot of explosion sound from exhaust. This 1 gotta jaga, sure the piston will go bonker.
I guess you will encounter pom pom when going more than 3/4 throttle. You rejet your carb to mainjet #107.5 and see how? If still pom pom, try to move the needle position up by 1 tick (the stock needle position is at the middle, move the clip 1 tick down).