Yoshimura Sound Insert Kit Rs-3 Muffler, MonkeyYoshimura Sound Insert Kit Rs 3 Muffler, Monkey RS 3 Sound Insert for the Honda Monkey. This new insert is designed to take the dB level down and fit perfectly with the RS 3 for the Monkey. This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product. Attention international customers: This