Spiral Flow Racing Mufflers 4" O.D x 12" Long With 2-1/2" Inlet/Outlet

Using advanced gas dynamicsand sophisticated noise cancellation acoustics, Morosoengineers have developed the finest and most durable RacingMufflers for your Exhaust System. Specially engineered spiral baffles divide the exhaust flow into two separatepaths, significantly reducing noise levels with minimal backpressure.

• Reduced noise levels with minimal backpressure
• These mufflers offer a 5 - 7 db dropover open collectors and the mufflers flow 850 C.F.M