Bought these pipes for my '09 Suzuki M50. They sound great and seem to have given me a little more power, in conjunction with a new air intake. However, if you plan on self-install as I did, I have some warnings for you.

First, not sure if the instructions are for the C50 or what, but they really do not apply very well to the M50. They also are not very well written in any case.

Second, if your bike was not manufactured for the California or overseas markets, which is the vast majority of bikes in the US, you should plan on separately buying plugs for the oxygen sensor ports on the pipes. My bike does not even have O2 sensors, as these are only required for emissions control systems on bikes made for particular markets. V&H does not include plugs for the ports in the package, and the instructions don't even mention them. Maybe they sell most of these in CA, but it's pretty ridiculous that the instructions only apply to a certain small subset of bikes.

Haven't had the pipes on long enough to give them more than 3 stars, given the problems I had with installation that could have been avoided with a little more care from the manufacturer.

It would have been perfect if I was told about the bung plugs. And perfect if they were provided.