Can I buy a header pipe to add to my E-series slip on? Does white bros make one? I'm not ready for a full pipe yet. I just wanted to know what my options are when I get some mods to the motor.

 

white bros. does make a header pipe for the 400ex, but I dont think it makes much of a difference. from what I understand, honda did a pretty good job of getting maximum power out of the stock header.

 

No you can't...the header is oversized compared to the stock one. Your only choice is to get the Pro-meg full system...well worth the money. Sell the old tail to a buddy.

 

OK, one dude says yes and one guy no. I would like more input on this. Skull, does the white bros header you're speaking of work with the slip on or would I have to buy a whole new setup? I know the stock header is fine until I get some motor mods. I was wondering what my options were after the mods.

 

Here's the deal...the diameter of the stock header matches up with the "s bend" slip-on. The "pro-meg full race system" comes with a larger diameter header and tail.

You have only two choices...
S Bend tail with stock header or the pro-meg.