Peace, mercy, and blessings of God be upon you. New Akrapovic Yamaha R1 muffler. Fits more than one model: For Yamaha YZF R1 2015-2025, Yamaha MT-10 2015-2021, Yamaha FZ-10 2015-2021. Made of high-quality stainless steel - resistant to rust, corrosion, and extreme heat.