MX pipe for 300ex help???

[ride300exrider]

is a sparks x-4 a good top end pipe for the 300ex, is it the same as a hetrick they look kinda the same?
i want a good pipe for mx
does anyone know if the hmf slip-on will fit a w/b header?
thanks

[bigbadbrad]

hmf will work with a w/b header, that is what i am runing right now, and i love it, best thing i have done to my 300ex so far.

[ride300exrider]

is it good power, all thro the revs, or mostly mid/top end
give me some feedback

[ny300exrider]

i think the x-4 is supposed to be made for botton to mid and the x-6 is supposed to be mid to top power.

[Diedrich]

i think the TC pipe is probably the best mx pipe out there..thats just my .02 though