WR450F model numbers

My manual says this is the model number (see pic, affixed to the subframe/tailsection) for my WR450F. Can anyone tell me what this model number means? I think this is a 2004 model, not sure, cant find the title. I have a service manual that has WR450FS on it. What does the S stand for? Thanks.


"S" was the '04 model year.




Also, there is your VIN number.  The tenth character identifies the year of production.  It went A-Y from 1980 to 2000, then 1-9 from 2001 to '09.  From 2010, they started back at "A" again.  The tenth character of yours would be a "4" if it's really a 2004 model.

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