I'm about to order a new pipe for my '03 400ex. I think i've narrowed it down to the white brothers e-series. Should i be getting the slip-on or complete? Is the complete worth nearly twice as much money? Thanks for any advice...

 

I hate that you've narrowed it down to that particular pipe. Almost every 400ex I've seen with a White Bros "E" Series has smoked. Not initially, but within a few hours of riding. I got the Pro Circuit T-4 silencer for mine, and it's never smoked. I'm halfway into my 4th race season with it. I'm still running stock head pipe. I finally broke down and rebuilt the eng on mine, not because it was smoking or running bad, but because I needed a little more power to get my fat butt off the line. Hope I helped and not hurt.

 

Actually i think i've changed my mind and decided on the yoshimura complete system...Anybody have any opinions on this particular pipe? any recomendations on what i should get?

 

well i don't have any experiance with the yoshimura but i have seen a few of the E series break. and if you want torque i love my alien

 

UpNorthRider, I totally forgot about pro-circuit. That would be a good pipe for your bike. I know a few at work who have them and they say they work pretty good.

 

the yoshimura doesnt give you that much power gains...id reccommend the DMC alien slip on...thats what im getting next

 

I am also considering getting the white brothers e series slip on, until someone said that it will make the 400ex smoke. I have not heard this before. Dirt Rider voted it the best pipe for the 400ex so I was really considering it, but now I am not sure. Has anyone else had a 400ex start smoking because of adding an e series slip on? Thanks

 

my friends does now...i wouldnt reccommend them.

 

I would go with the yosh full systems. there great pipes.