Universal Stainless Steel Car Exhaust Pipe Muffler Resonator 51mm Inlet/Outlet Exhaust Tip Tube Silencer Specification : Product name : Exhaust Muffler Material : stainless steel Color : chrome Overall length : 31cm/12" Length of box：20.32cm/8" Box Diameter: 8.9cm/3.5" Round Inlet diameter : 5.08cm/2" Outlet diameter : 5.08cm/2" Surface finished : polished Body type : round Muffer type : straight through Core : galss packed Features : 1.These resonators are constructed from high quality aluminized mild steel and feature a high flow perforated inner lining. 2.They are designed as a “straight-through” system which does not restrict the flow of exhaust gases, but does lessen the noise when compared to straight pipe. 2.High flow perforated core eliminates flow restrictions of a louvered style core. 3.Heavy duty inlet & outlet for a strong lasting design. 4.Exhaust tip has corrosion resistance to alkali solution and most organic and inorganic acids. 5.Repeated polishing processing, highlighting the noble quality. Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.All dimensions are measured by hand, Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm). 3.There is no instruction included.Professional installation is highly recommended .If you want to know how to use or install it,please contact us by Email! Package included : 1 x exhaust muffler