This product is a modified 51mm slip-on exhaust mid link pipe designed specifically for Duke 125, 250, 390, and RC390 motorcycles from 2017 to 2020. Made from stainless steel, the pipe offers a moderate sound level and includes a mid link pipe. Insuring a perfect fit for your motorcycle. With a weight of around 500g, this high-quality pipe is sure to enhance the performance and style of your bike.