best slip on for my stock 400ex

[brad_400ex]

i just got my 00 400ex and i would like to get a slip on pipe for it. I have heard that wb e-series are good. thanks

[red400ryder]

I say you should look into the T-4:D they are loud pipes but in my opinion give your bike a nice increase in bottomend and midrange power. Friend of mine runs one on his 01 400ex along side a k&n air filter with outerwear w/o airbox cover and his bike sounds and runs nice with the T-4. From getting riding time on his i can tell you the pipe along with his airbox mods make a big difference cause they helped him pull stock gearing with 22's alot better than stock gearing with 22's on a stock motor cause i could never climb the hills he could climb cause his bike basically made better power with his pipe and airbox mods instead of my all stock 01 400ex. So take my word or not the T-4 is a winner in my book. later madmike

[jb400exxx]

i also have the T-4 and i love it. sounds great adds a good amount of power, mostly low and mid.