what up peps i bought a used aftermarket exhaust pipe and i wont to know if its used do i got to still re-jet the carb or what?it was all ready re-jetted when i bought it about 3 months ago?
For your motors health don't assume that the bike has been jetted. Best to open up the carb and check for yourself. Improper jetting may lead to a meltdown. Like Blaaster says more info about your ride can help us to help you. Welcome to the forum.
Jetting is a must on a 2 stroke . Don't confuse it with a 4 stroke and think you have to jet just to make it run a little better. The oil in 2 stroke gas mix is what lubacated the cylinder and crank.