Use this on my road bike for just over a year 2 bolts that hold the underside of the infill panel have been replaced with other bolts due to the fact they fell out, also the instructions speak of a bolt that goes into the main body of the silencer but after i removed the can to fit the system I never noticed this bolt in the pile i cant even remember removing it, so I think there was either never a bolt there or its the one that attaches the headers to the bike at the bottom of the engine the baffle hasn't even been used!!! Passed oulton park noise testing with no baffle £350 posted