I dont know how to post pics...but Im tryin to sell an exhaust system on ebay, and I doubt the head pipe is off a 400ex, but it has a 400ex slip...I hear the 400ex has a dual port for exhaust on the engine block, but this exhaust pipe is a single, and the guy that had the atv before me decided to put the 400ex slip on it..burned the plastic...so do all 400ex stock exhausts have dual port heads?

Tbuck

(how do you post pics????????)

 

Yes!