if u wanna atleast push 40 to 45hp,airsal 240 kit,drag port and polish,head milled,inframe drag pipe,3 or 4 mil stroker,34mm carb,lighten flywheel and you will have 1 quick blaster.................
banshees came out with 33hp stock,stock 400ex came out with around 28hp with the z and kfx400 2 to3 more hp then the z,with the blaster they came out with only 17hp.my bike now shuld b pushing close to 30hp so i might have a chance against a 400 4 poker,i've raced banshees b4 on sand with filters and been jetted and im only about 6 bike lengths behind 1............