08-24-2002, 11:06 PM
:devil :devil Hey all, I have a 1999 400ex!!!! and i need to make it go faster!!! its all stock!!!!!! will these mods help alot?!?!?! High performance piston and shaved head! how much WILL THIS COST?!?!?! usa $$!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!