The Super Pro Street 9000 is the most AGGRESSIVE muffler we make for sound and competition!
Smaller case size: 4" x 6" x 9" fits most newer vehicles on the street today. Customers love the small case size and multiple configuration choices. Super Pro Street 9000 is recommended for use on newer vehicles with or without CATs.
Super Pro Streets have found their way into racing events with winning results! Warning: It's very aggressive!
The Sound of SPEED!