Header

[HondaEXrider22]

For my 400EX, I have a White Bros. SLipon and was wonder if the FMF Powerbomb header will work with it and if there is any noticable gains. For 215.00, that is almost as much as I payed for the slipon! What do you think?

[†2005 400ex†]

im not sure if it will work, but im thinkin that you wont see very much gain since your motor is mostly stock

[CHEVYZ]

You will see a very slight increase in torque. That is about it. The stock 400EX header is already has a pretty decently flowing design.

[Old Head]

I have an e-series slip on with the power bomb fits perfect. I felt some gains down low and the exhaust sound got deeper.