SRAM RED AXS 2xNew tooth profiles for improved wear More durable finish One piece construction for faster, smoother, more secure shifting X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear SRAM Model ID: CR RED KIT D1 Attributes BCD Direct Mount SRAM 8 Bolt Chainring Comp. AXS Material Aluminum Speed 12 Position Set Primary Color Grey