FMF PowerCore IV

[kid300ex]

Is it any good? how loud is it? Is it rebuildable? How could I get the Quite powercore with the header?

[not2hi]

FWIW, the PowerCore IV was designed for the 400EX. I just replaced our MegaMaxII with another MegaMaxII, and works really well. Lots of power through the entire band, requires jet changes. Comes with new head pipe, spark arrestors, quiet core insert. Decent price for all that's included.

98 300EX, Wiseco, cam, K&N power kit, Uni Filter, FMF MegaMax II, no limit CDI box, seriously vented airbox.