[chuck1589]

So I'm looking to pick up an after market exhaust for my bike... Nothing too too loud, but I want a bit of a different sound than the stock stuff... And I want more performance, I'm kind of a junkie that way... So anyway, I'm thinking Yosh RS 5 exhaust, because they're a very well respected name, but do I need a power commander too? Some websites say yes, some don't say anything... I'm sure someone here has installed this exhaust, so whats the deal???? Thanks for the replies!!!!!

[driftnracer]

If you are looking for an exhaust which will give you a nice rich sound, decent hp increase, and not require a pc3, I would go with the two brothers carbon.

[buzz4]

I have a 07 600rr and I just installed a two brothers exhaust. The sound is great. Not to loud, just enough! I don't have a power commander on my bike and have not noticed that I need one either.

[scorpi810]

I'm with buzz; 07 600rr with 2 bros, sounds great

[ldavis]

if you're installing a slip on a power commander is not really needed at all.. if you decide to go full system then i would say yes..