That's what I was thinking! I don't mind a little noise now and then but not all the time and especially for that much money I'll just let it go!
The point of the two-brothers exhaust is flow. Its lest restrictive than the stock exhaust. Alone, no its just a noise maker. How ever, add a free flow air filter, re-route the airbox intake to a cleaner cooler spot, then add a EFI controller that allows you to put more fuel into that sadly leaned out engine, and you have a reason to spend $500. There is no one magic part. Its a combination of parts that help make an engine perform better.
With how lean CFMoto is forced to set these by the EPA, I would not swap the air filter out with a better air flow, and/or an exhaust unless you have an EFI controller. Doing so with out could cause your machine to lean out too much and melt down.