So what if your buddies make fun of you for having a rear cog the size of a mini-pizza? You’ll be the one laughing when you are able to scale climbs that they’ll be walking. The SRAM Force AXS XG-1270 Cassette for 12-speed drivetrains offers a 10-28 tooth spread that makes clever use of their X-Range gearing system that matches a big ranged 12-speed cassette with various unorthodox chainring pairs up front in order to provide the widest possible gear range with the minimum jumps. Included in the design is the XDR technology that makes this cassette compatible with modern rear hubs without the need for special tools or a new rear axle standard.