Description： Material: stainless steel Inlet & Outlet: 4 inch Surface Finished: Polished Muffler type: straight through Inlet&Outlet Connection Type: Pipe connection Package included: 1 x exhaust muffler Features: Vibrant universal mufflers are perfect for your tuned performance vehicle. round mufflers add superior looks to your ride , Manufactured from polished stainless steel with exposed welds, Vibrant mufflers are densely packed with premium, multi-layered sound absorption materials—producing a low, deep tone. These mufflers feature "true straight-through" perforated internals for unrestricted flow and maximum horsepower. Note: 1.Please measure before purchase to make sure you have enough space to install 2.Professional installation is highly recommended (No instruction included). 3. Please allow 0.5-1 inch difference due to manual measurement. (1 inch=2.54cm)