cbr929rr
07-01-2006, 11:11 AM
I'm looking for a quiet exhaust and two brothers has been measured multiple times at 91 db with a quiet core. Has anyone used one, are they any good. I'm looking for more bottom and mid power and i think that may work well with the backpressure from the quiet core, they look nice too. My only other consideration is a dubach dr. d exhaust with a quiet core at about 93 db on a yamaha yzf450 so it may be quieter on a 400ex.