The SRAM XG-1275 Cassette is for the riders who prioritize all day function over anything else. With the expanded 520 percent gear range giving riders more ability to spin and recover on the steepest of climbs. Feel free to choose a larger front ring with the 12 speed 10-52 cog range. Allowing for enough for the speed on the flats without sacrificing cadence on the climbs. Strength in Steel Featuring SRAM’s FULL PIN™ technology that uses lightweight precision engineered steel cogs permanently connected with high strength steel pins. This allows an open design similar to the X-DOME™ Cassette that aids in mud clearance, giving riders crisp shifting and longer component life. EAGLE™ EAGLE™ Technology represents the newest in 1x drivetrain technology. Being lighter, simpler, more durable, and easier to use. EAGLE™ Features all the newest technological advancements, engineered for durability and performance whilst maintaining a significant weight benefit. EAGLE™ Also provides a 500% increase of range which is equal to a 2x11 Drivetrain.