I needed something for my 2012 Suzuki M50 Boulevard that would do it justice. Because the stock exhaust was rubbish and made it sound like a sewing machine. The first time I started it up after I installed the Slashdowns I almost went deaf. Of course, I chose to take the baffles out because I'd heard cobra exhausts were extremely loud but I didn't believe those rumours at all. I intend to put the baffles back in to moderate it a bit. But not before a few rides! Installation was about 3.5 hours and I had almost no issues. The instructions are simple and complete. I had a minor issue with the muffler mount but its only because I couldn't get enough friction to get the nut to bite and stop from slipping. I bought exhaust gaskets in preparation for this but I couldn't find any after I removed the stock exhaust so I installed these without them too. The pipes weigh less than half the stock system and look terrific! I had no issues fitting them on (I bought the 09 spec exhaust for my 2010 spec M50). No missing parts and no hassles. By far the easiest addition I have added to my bike, And the BEST! The sound is incredible. It sounds like a high performance drag beast. I had a hard time choosing between the Vance and Hines Cruzers and the Slashdowns. In the end I purchased the Slashdowns from Motosport at a very nice price and couldn't be happier. These are certainly louder than the Vance and Hines and come with the Bungs alread in, so all you need to do is unscrew the O2 Sensor and then screw it in to the new pipes. All in all, I'm super happy with how my Boulevard now sounds (to match its excellent looks) and I highly recommend this exhaust for your 2009-2012 model M50!