10 Series? Delta Force Race Muffler; 3.0 in. Center Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 6.25 in.; 12.25 in. Overall Length; Aluminized Steel; Durable Fully Welded 16ga Aluminized Steel Single chamber. The 10 Series race mufflers are intended for racing applications and utilize Flowmaster s patented Delta Flow technology for maximum performance. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Will provide a noticeable dB reduction over open headers. Please call the Flowmaster tech-line for assistance with specific dB requirements and applications. This product ships in approximately 1 days