Good idea on going with after market exhaust if you lose your exhaust cap. It would be nice if there was a complete list somewhere of exhaust that exhaust options, whether they simply bolt on or have to be retrofitted, and what the result was in performance/sound.
I ended up finding my muffler cap on the side of the highway (522 in woodinville) the day after I lost it. 2 of 3 bolts and spaces were still connected to the unit. I bolted it back on with 2 bolts for now. Very lucky I found it, cause I only rode a portion of the same route as the day I lost it, and the fact that it was in plain site on the side of the highway. Kinda like finding $45
.
(My bike is still stock. Still not sure what upgrades I want to do (muffler, rollers, tires, suspension, seat height (adding spacer to rear shock). ?).