I am in the market for a pipe for my 2000 400ex. I am been looking around for one ever since I got it in Feb. I want a disk slip-on sliencer that won't be too loud. My options are the WB E-Series, Supertrapp IDS2 or the FMF MegaMax. Which of these is the most quiet and reliable? I have also looked at non-disk sliencers but I like the option of customizing the exhaust to suit my needs.

 

I am using the Supertrapp IDS2 in my 400EX and I like it a lot. I am using the silencer with 15 discs cause I am running it with a Web Cam, K&N, 155 main jet, airbox vents, and WB rev kit. Sounds nice too.

 

Going by tests the White Bros is the better pipe!