If you send Installation video to us,we can $50 refund to you,Only for Top 3 by the time of sending Video.If have any doubt, please contact our customer service,thanks Description: 100% Brand New, Never been used. Pipings-Made of high quality T-304 stainless steel with computerized Mandrel-Bends for strength and durability Electric cutout Kit-Made of lightweight CNC Machined anodized T-6061 Aircraft Aluminum Alloy, high performance racing spec. Design to Instantly Increases 10-20 horsepower. Inlet/ Major Piping Diameters: 2.5" Tube Aggressive deep sound while ensures smooth exhaust gas flow. Electrically controlled exhaust valves outflow, simply by flipping the switch. IG Welded CNC machine flange for resistance against pressure and corrosion Increase engine output and efficiency. Professional Installation is Highly Recommended (No Instruction Included) Package includes: 1 x Electric exhaust cut out 1 x Wireless Remote 1 x Y-Adaptor 1 x Wire Harness 1 x Motor As the picture shown Fitment: 2.5" Exhaust Piping (Not A Direct Bolt On Item) Please check the Compatibility before you order the item