Origin:Mainland China Universal 2.5'' ID 17'' Long Silencer 4'' Stainless Steel Box Inlet 63mm Resonator Specification: Condition: 100% Brand New Product Name: Silencer Material: Stainless Steel Color: Chrome Size : 1: Total Length: 445mm/17.51in Inlet & Outlet Inner Diameter: 63mm/2.5in Inlet & Outlet Outer Diameter: 65mm/2.55in Drum Diameter: 101mm/4'' 2: Total Length: 480mm/18.89in Inlet & Outlet Inner Diameter: 57mm/2.25in Inlet & Outlet Outer Diameter: 61mm/2.4in Drum Diameter: 101mm/4'' 3: Total Length: 575mm/22.63in Inlet & Outlet Inner Diameter: 63.5mm/2.5in Inlet & Outlet Outer Diameter: 66mm/2.59in Drum Diameter: 101mm/4'' Application: Suitable for people who like vigorous , low and deep voice ,or after modification you feel your resonance is large, or after modification your torque at low speed caused serious damage.Our resonator can solve these problems. Features: 1. Made of stainless steel, corrosion resistance, high temperature resistance, rust resistance, durable 2. Repeated polishing treatment, highlight the noble quality. 3. Excellent exhaust, which improves the appearance of the vehicle. 4. Easy Weld-On / Clamp-on Solution,the perfect substitute. 5.Middle section is straight-through and silencer, and the effect of reducing resonance is remarkable. Fitment: Universal For Auto Car. (Please Compare With Your Original One Before Purchasing!) Package Includes: 1x Silencer 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. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.