[High quality] The material is made of high-quality 304 stainless steel, which is durable, corrosion-resistant and anti-rust. Lightweight, reduce overall weight and achieve optimal performance for maximum output [Color]Carbon Fiber Painted,Overall Length: 370mm,Connection: 51mm Slip-on type [Sound]Sounds amazing, nice growl, loud without being too annoying. [Installation instructions] Including mounting clips and a 38-51mm adapter, easy to install, does not include conversion connecting pipe. It can be used for any bicycles, street/sport motorcycles and motorcycles with a diameter of 38-51mm. ??????[Note] Due to some omissions in individual products during packaging in our warehouse, resulting in incomplete delivery, we have stored the missing accessories in Atlanta to solve this problem in time. If you encounter this problem, please contact us at once??we will ship it for you at once If everything goes well,the accessories will arrive in 5 days. If you find that th