How many MPH can a all stock 400ex go? [img]images/graemlins/AR15firing.gif[/img] How much difference will a big gun exhaust make? K&N air filter? Thanx [img]images/graemlins/smile.gif[/img] [img]images/graemlins/burnout.gif[/img]
It will go in the mid to high 60's. I think there actually fairly quick stock. Those bolt ons will only make it better! [img]images/graemlins/laugh.gif[/img] If it isn't fast enough for you (top speed) go up one tooth on the counter shaft sprocket.