New from 2004, taken off when new. Zero hours.. So it is stock. Do you want a quiet stock muffler for your 300EX? Does you header pipe have a dent. This system is flawless. Garage kept dry. US Forestry Service Approved. No need to rejet your carb. Get the quiet stock sound of your 300EX back. No rust. I will sell together or separately $45 header pipe, $75 for muffler. I will ship to conus Call 6 0 9 2 0 4 9 7 5 0 or email xrjay7@yahoo.com