YAMAHA PRUNUS SR400 Megaphone Muffler Q5K-SKR-Y01-056Megaphone muffler with nickel chrome plating finish Surface treatment is high quality nickel chrome plated finish. By installing a muffler chamber, we have achieved both increased power in the entire area and environmental performance. The appearance has been further upgraded with the new high grade PRUNUS emblem Easy to install slip on type muffler [Specifications] Proximity noise: 90 dB (A) [Compatible vehicles] SR400 ( 2018 model ~) B9F1 B9F3