| | TRD announces the release of the new TRD Stainless Steel Sport Muffler for the 2003 - 2004Scion xA and xB. Boosting power by up to 3 HP and torque, the high flow sport muffler features a polished 3 ½” wide diameter tip with a TRD-etched logo and produces an aggressive, sporty sound. | 
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