i have an 05 honda 400ex with a bunch of mods. what else can i do to get more pep out of this motor? it seems pretty timid, however i dont find it weak by anymeans. im just used to the power and i want more. i plan on adding a FMF head pipe soon. im just wondering if there is anything out there that will give it a distinctive hit in the power band, or make it really rip. thanks.

 

stepping up to a stage 2 cam and a higher compression piston would be my next step

 

a 440 kit