Originally Posted by 05_Repsol_Blade
Which Aftermarket Pipes for 1000RR perform and sound the best?
I need opinions before purchase a pipe?
To me, asking 'which one sounds the best' is like asking someone's favorite color: it is completely a personal preference. What I like doesn't necessarily have anything to do with what you or anyone else likes. You'll get a different opinion from everyone. It's hard to describe the variance in tone without hearing them for yourself. Except for D&D, in which case you'll get the same opinion from almost everyone: they're really F'n loud.
That being said, I like the sound of my Micron (nothing 'great' or 'special,' but nice). I really liked the sound of my Two Brothers slip-on on my 929 & 954. They don't make a full exhaust for the 1000RR, and I'm not a fan of the looks of their new canister for the 1000RR.
Hard Racing usually advertise Micron's great gains in HP (Serpent full system), but no one else seems to get gains as high as theirs. Also, the gains that people get seems to vary a lot from 1000RR to 1000RR. The price is usually pretty good, though.
If I did it over again, I'd go with the Arata. They get as much performance as anyone, and it seems pretty consistant from bike to bike. Quality (fit, finish, welds, etc.) is excellent.