D&D doesn't make a pipe for the 600RR and where did you hear/see it robs the powerband? I had a D&D on my F4i and while it was crazy loud it also had good power. Never felt like it robbed the powerband.

 

Don't forget VANCE & HINES - sweet! They all nice!

 

my delkevic, while not a very known brand for exhausts's, is stupid loud, and sounds amazing...i have a vid up...as far as loudest, def no exhaust

 

what do you think of a leo vince SBK slip on for an 09 RR i am about to buy one

 

As far as slip-ons nothing really is all that much better than any other. Except well that Yoshi is the best.

 

I love my 2 bro's... loud as hell when you get on it. However it is the only one Ive heard in person (that i know of)

 

 

look inot a brand called hyper flo they are beyond lound and produce some good power.
here is a comparison of it against stock
YouTube - ‪CBR 600RR Hyper-Flo Exhaust‬‏

and here is it with the cores removed
YouTube - ‪Hyperflo Exhaust without Sound Cores‬‏
with sound cores

 

I have a Yoshimura RS-5 Undertail Carbon Fiber, and it sounds good to me i don't think my neighbors care for that much but i like it......BUT! i really wish i could have got that taylormade one i just like it too much.

 

My buddy has a hyperflow on an 08 600rr. I have to agree the hyperflow does sound amazing, but is by far not the loudist. Check into a company called Pinebox at CBR 600-RR Home They are the loudest.