I have The stock exhaust off of my zx10r that im trying to sell just to make some extra money...The bike only has 2000miles and the exhaust was only on for the a few weeks before the aftermarket one was put on, and the undertail kit is like new. So if anyone is interested make me an offer. Im thinkin the first $200 takes the exhaust and $50 for the undertail kit. Call brian at 443-417-8175, or email Clarity7891@yahoo.com. Thanks