Because recently Yamaha’s brand new YZF R1-M was launched but it is not so cool like the old model of R1.
Both Yamaha R1 and R1M are available in the Yamaha showrooms. The M version is a track oriented variant of the mighty R1, reducing the overall weight by the use of lighter parts. Even the R1 is quiet responsive when used on track but when it comes to extreme performance, R1M is there for the job. Yamaha has even announced a more road oriented version, the R1S, which would be getting parts made up of aluminum instead of the titanium. The R1S would be the most economical R1 whereas the R1M is the most expensive. All the versions use the same 998cc, 4-cylinder engine producing different power values as the result of change in parts.