my buddy bought a used 400ex and wants to put a pipe on. he's easily persuaded and got a dg pipe in his head for some reason. i'm tryin to talk him out of it but i'm a polaris guy so i have no idea what works for this bike. i need some suggestions so i can print out and show him to get this dg pipe out of his head.

 

i have a Big Gun evo X which is great pipe for 400ex! look into it fer sure!

 

PRO CIRCUIT T-4..........its an awesome pipe and i love it

 

I bought the white pros promeg exhaust, there is another thread on here that gives reviews from pipes, this pipe came in second in power to the curtis sparks but curtis sparks is hella exspencive, look at my pics to see the exhaust.

Wreckless