Gibson Performance Exhaust 55109S Stainless Steel Superflow Universal Muffler 4 x 9 x 13 in Oval Body; 3. in. Dual Inlet; 3.00 in. Dual Outlet. Deep Powerful Sound Chambered and Louvered Design, No packing, No Baffles or Weak Deflectors Minimal Interior Drone, Reversible Limited Lifetime Warranty