I am new to this website and i was wondering what is the best pipe for the 03 400ex. I bought one about 2-3 months ago and need more power out of it. I was wondering what the best pipe was as far as hp gains and smoother power curve. Thanks for the advice...

 

go with a full hmf system

 

curtis sparks is my # 1 vote. however, LRD, HMF, and CT are all great pipes too.

 

I like my pro-circuit t-4. If i start doing stuf to my engine i'll prolly get a sparks.

 

i got a 2003 400ex about 2 months ago, i am thinking about two pipes for it. The CT racing pipe complete, or the white brothers e-series complete. Dirtwheels has a test on the 400ex pipes on their site. The ct makes the best power, and the white brother's power was really close to the ct. But, dirtwheels chose the whitebrothers because it was a little bit quieter. There were more pipes than just the ct, and white, i think they had about 10 pipes. I am leaning a little more to the ct pip though. Right now it just depends on their prices!

 

Ya i was thinking white brothers e-series complete. But ya hit me up when you get your pipe and tell me what you think of it.

 

The e-series pipe is a beater. Mine is less than a year old and it is cracked. The one on my wifes quad is cracked,and 2 of my buddies e-series pipes are starting to crack. I guess I know why they are cheap$.

 

hmm, never heard of that before, maybe i should think twice before i get the e series!
the ct has more power anyways.

 

Were they cracked cause you wrecked or something else?? Well I was thinking of getting the e-series pipe but now i guess its on to the CT.

 

Big Gun!