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My buddy has 2 factory exhausts for sale. EMAIL him if you're interested, want pix, etc... geeeerad at gmail dot com
2005 Yamaha R6 factory exhaust (slip-on only, not the headers) - Only has 700 miles on it and it is PRISTINE. Cosmetically new. Not a single scratch. $50.
2002 Honda CBR F4i factory exhaust (slip-on only, not the headers) - This item has the normal superficial discoloration of the pipe (the mid, not the exhaust can) and very minor marks on the chrome exhaust. No dings, dents or rash...its in pretty good shape. 10k miles on the exhaust. $30.
These items may fit other years w/in the model lineup.