got its start as a natural extension of Car Sound Exhaust, the parent company to . Car Sound Exhaust specializes in superior catalytic converter and performance exhaust technology, and has been doing so for the past 35 years, earning their reputation as an international market leader. In addition to the brand, Car Sound Exhaust also represents Rumble and Bosal USA, further cementing the company as an industry leader in all areas of replacement and performance exhaust.