Whats the best exaust for the 400ex??I was planning on going with the Big Gun but any input would be very helpful. Tim

 

Call TC RACING he is the best four stroke engine builder out there! Check the four strokes in the GNCC and GNC series you will see most of the top riders use TC stuff. call him (814) 723-3514

 

Two of my friends have 400EXs, one with a curtis sparks silencer and head pipe and on with a white brothers e-series slip on.. In a drag race the sparks edges out the wb. Could be the head pipe, I don't know. But you can drill holes in the stock exhaust for better flow.

 

I have stock but I like DMC Duals myself.

 

FMF Dudes

 

Supertrapp IDS2 for trail with few mods
DMC for race

 

COBRA!!

J/K DUDE GO WITH FMF R BIG GUN

 

I've heard TC is the best but mainly for racing and is very loud....other than that, i would either go with the White Brothers E series(which has out ran the big gun on test, including DYNO runs, and is not not half as loud) or either the FMF power core IV-2....

 

So far of what I've seen, I had to go with the master!! His ad goes as follows, " Simply the Best" and that would be ............? LRD!!