The product is brand new and good quality. Made of selected raw materials and under strict quality control, performance and good quality! Can effectively reduce deep noise sound, also reduce noise contamination. Product is adjustable and removable. Easy installation. Universal mode, suitable for most motorcycles. It is fit for installation on the exhaust pipe tail exhaust pipe diameter size of 60mm, if you don't know your exhaust pipe dia, please measure it. We provide clear pictures, measurements where possible. Please allow 1-3 mm error due to manual measurement. If you are not sure if it is suitable, please contact us before purchasing.