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I have some questions to clear up, concerning uncorking a 2012 TTR250, that I need to keep road legal to Australian NSW laws.

Is it the pipe coming from the Bike or the Exhaust (The Header) that deals with noise I get the impression that it's the Exhaust.

I know the Exhaust system is restrictive but is the problem in the Exhaust or in the pipe.

If it's the Exhaust, is there a aftermarket one that will help uncork the Bike but not exceed noise limit of 94 decibels? It seems the powercore is loud at 96 without a insert.

Also when buying a Exhaust you don't need a full new system do you? As in new pipe coming from the bike aswell, they should mount straight on yeah?

Also is it possible to rejet the carb, and do airbox mods, with out an exhaust? Or would it be better to just leave it stock?

I know lots of dumb questions but I would appreciate any help.

Edited by Australian Psycho

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