Yeah I have a 400ex and I wanted to know what's a better pipe DMC or White brothers, I'm looking for a pipe that will make the biggest improvment to bottom end/mid-range power but won't be loud, whats the best pipe for me ?

 

Both of these pipes are loud due to less restriction which means more hp. I got a WB R4 and will do nicely with the 440 kit being put in it. My friend has a DMC with a 440 kit and it woops ***.

Stay away from Big Gun unless you want to lose top-end.