There is a thread on here that tells you step by step how to take the baffles out and even has a video that shows exactly how to do it. Just do a search for debaffle and it will come up.
according to suzuki rep the c90 pipe is not baffled. the muffler is that silly looking thing right in front of the rear tire. the piece you remove for the extra fuel tank.witch means after market pipes. way to much money for pipes