X-Range gearing gives you more range and a smoother gear progression, so youre always in the right gear 440% range gives the coverage 1x gravel riders want For use with XPLR 1x rear derailleurs Compatible with Flattop chains Compatible with XDR driver body MINI CLUSTER technology with aluminum large cog for light weight and durability SRAM Model ID: CS-XG-1271-D1
Brand: SRAM
