White Bros. E Series or HMF for 400EX

[04'400ex'er]

What type of power curves do each pipe produce? Are they more for low end torque or are they a mid to top end pipe? Which is the overall fastest pipe between the two if anyone on here has had both or raced aginsed one. I have narrowed it down to these two, but am kinda hung up on which would put out the most power. Thanks for the help.

[6858-400ex]

hmf:macho

[LeGaCyGiAnT124]

does the hmf have a heat shield? i really need to know this. but i would have to say the hmf:blah:

[redhondi400]

the e-series is little quieter than HMF. That was one of my reasons for the WB or the HMF.

[sprtrx300ex]

HMF , no doubt

[ckasper18]

There both great pipes but the e series is a little more quiet and is tunable for the moise all depends what your doing racing trail riding The hmf is the way to go for racing bet with yhe noise db being an issue in many states the e series is also a great choice.

[Glamiscc400]

My Hmf didn't come with a spark arrester. I've been riding for 7 years and never have i've seen a ranger go around checking for spark arresters. Should I buy a spark arrester or am I better off without it?

[Colby@C&DRacing]

The spark arrestor is allot cheaper than a ticket you never know when you might get checked.
As for the heat sheild question I believe you can get the e-line carbon fiber sheilds for the hmf but it does not come with one.

THe like the HMF pipe better than the White brothers. makes more power, you can remove the spark arrestor easier and there quiet core really works well without loosing much power