I'm pretty sure I have an OEM one off of an '07. I'm kind of laid up from a recent surgery right now but if I can get out to my building where all of my stuff is tonight or in the morning, I'll check and let you know.
Update: I have 3 stock headers for '05, '06 and '07 CRF450Rs. I have the '05 marked as such, so the '06 and '07 were somehow left unmarked. Not sure which is which but when I held one over the other I couldn't tell any difference between the two. However, one has a dent in the front part (most forward position). The other I would rate an 8 or 9 out of 10. Very good condition. I looked up new OEM part numbers and the last 3 digits are different but I'm not exactly sure what that means as far as measurements/specs go. I'll take $100 shipped in cont. US if you are interested in the nicest one. It has the heat shield on it, which is $30+ from Honda. If you're interested, email me at wtoddr5@gmail.com. If you buy it and it doesn't fit, I'll be more than happy to refund your money since I'm not 100% sure which year it is. I also have a fair amount of other parts from those same years if interested.
Bike is 07, sending you email.
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