400ex

[mdropem]

i have a 2001 400ex .all it has done is a nerf bars, header pipe and can,and a k&n air filter.what is the first mods i should make to increase power ? i want to build it for drags, so i want take off power mostly.any input greatly appreciated.

[Nick110]

bore it out, high comp piston, full P&P, TC cam, lighten the flywheel, change the gearing, get a vortec cdi

[jak1389]

^^^ what he said