SRAMs entry into the world of 11-speed groups. In contrary of the high-end cassette SRAM used herein a construction made entirely of steel. The body consists of 11 individually punched pinions Technology (123 pins made of stainless steel) are held together by means of FULL PIN and ensures the open construction so for optimum self-cleaning and long life. The only drawback is that over the milled from a full cartridge slightly higher weight. The black coating held (JET) fits not only look chic in the overall picture of the GX group, also it improves shifting performance and increases the corrosion resistance of the steel structure.