I have for sale this partial stock exhaust system. No longer available through Yamaha.
Asking $250. Just for comparison, the stock mufflers are $1300 each. I have both mufflers with heat shields, mid pipe and valve cables. Zero damage to it. It came off when I installed a complete Sato titanium system on the 2007 R1. I checked part number and found it works on 2007-2008. The 2004-2006 muffler part number was different. Looks similar but number different. Could be a minor thing like the end cap was different shape or something. Item is located in Suisun City and can be seen most any day between 9am-9pm. Call, text, or email to set up a time to come by and check it out.
Akropovich, Two Brothers, Vance and Hines, Jardine