SPELAB 2.0/2.5/3.0 Inch Electric Exhaust Cutout APP Remote Kit This exhaust e-cut out combines the parts into a whole, avoiding tedious assembly and saving your time. Universal: SPELAB Electric Exhaust Cutout kit is fit all types of vehicles. Please make sure you have enough space to install before purchase. Valve: The cutout is an upgrade to the original design that allows you to control the opening angle of the valve with electric remote control. Wireless Remote: To open the cutout you simply push a button while you are in the car, and it will open your exhaust for a throaty rumble exhaust note. Exhaust Port: This cutout is also thickened at the exhaust outlet for a longer life and avoid damage. Electric Exhaust Cutout Working Temperature: 0℃-150℃. Electric Exhaust Cutout is not recommended to start work in heavy rain or extremely cold weather. Details: Brand Name: SPELAB Size: 2.0 inch/2.5 inch/3.0 inch Weight: 4700g/5220g/5850g Valve Material: Aluminum Alloy Pipe Material: 304 Stainless Steel Fitment: Universal Control: APP control APP installation path: Android App Installation & User Guide Installation: You can choose welding. If you don't want to weld, you choose our butt joint band clamp or lap joint band clamp. Note: Please make sure you have enough space to install before purchase. Professional Installation is Highly Recommended. Exhaust control valve motor is NOT WATERPROOF. If below -5degree Celsius the oil in the motor will be frozen and causing the butterfly valve to be stuck.