exhaust systems

there many different kinds and different types of exhuasts that you can get for a dirt bike. there are some that are really only made for a type of a bike or for every bike. it all depends on what you have. All these different exhaust syatems make different kinds of power. it depends what you have for a muffler and a header. the most common exhauts that i see is a yoshi or an fmf on a dirt bike. on my bike i have a full white brothers exhuast system but the dont makes them anymore. ive also had a yoshi exhaust and those make alot of power. i think that yoshi is the best by far.