Suzuki GSXR 1000 XB Extremeblaster with sound arrester baffle for noise reduction and back pressure to protect against lean conditions at high rpm without a fuel controller. This Sound Arrester reduces mid-range sound considerably. Sound reduction at idle 5-10db, sound reduction at 6000 rpm 15-20 db, sound reduction 13000 rpm 5 db. Very comfortable sound level at normal driving conditions. Email me at [email protected] with questions and information to buy now