the TC shorty pipe is the loudest u can put on a 400ex them r like 110 112 dbs.

 

That's right man get the loudest pipe you can so you can help out with getting your local riding area closed down. People are looking for any reason to shut down riding areas and if you have a super loud quad then that is just another reason to close them. you can a good pipe that is not extremely loud and still makes great power.

 

Now if your going to only race then that's a whole different story.

 

Go with a dg krome megaphone exhaust lots louder than FMf or any of these others can't get no louder pipe unless you straight pipe it n that's gonna mess your valves up I know I've done it

 

Like the one guy said 12 years ago, TC Supertrapp. Barr non the loudest mother ever. Unfortunatlly I hear they are not made anymore. So maybe your DG..

 

interesting thread, I have the same question