Yamaha Motor to Release Two New YZF-R1 Supersport Models in Europe and U.S., YZF-R1 & YZF-R1M share lineage with MotoGP machines - News releases | Yamaha Motor Co., Ltd.
2015-2021 Yamaha R1 M4 Street Slayer Slip On Exhaust YA9944
Yamaha R1 (2015-2022) S1R 3K Black Carbon Cat-Delete Slip-On - Part Nu – Two Brothers Racing
Video: 2015 Yamaha YZF-R1 First Look | Cycle World