You bought the Mazdaspeed 3 instead of the NA Mazda 3 for a reason. Performance. So why not make your MS3 look and sound as fast as it is? Look no further than the TurboXS Catback exhaust (MS3-CBE). Made from 3” diameter, mandrel bent Stainless Steel, the MS3-CBE transforms your MS3 in the snarling, rumbling beast that it is. The polished, rolled edge, 4” diameter slash cut tip, fills out the bumper nicely without giving you that “boy-racer” grapefruit launcher look. The resonator gives it a deep, burbling rumble that tells everyone this is not an ordinary Mazda 3. Additionally, we saw power gains of X HP and Y ft-lbs of torque when installed on our MS3 with a stock front exhaust and X HP and Y ft-lbs of torgue when installed with our Downpipe and Racepipe.