SRAM XG-1290 E1 12-Speed Cassette Wide Range and Tight Jumps Usually you can only get tight jumps or a wide range, but now you're able to get both. The SRAM XG-1290 E1 12-Speed Cassette is SRAM's lightest and most durable cassette that breaks new ground for gearing choices. It is available in four distinct cassette options with each providing secure shift ramps specifically designed for electronic shifting. Carefully chosen tooth jumps keep you in the right gear when you're out of the saddle on steep climbs and making fine changes to hold a wheel while approaching a sprint. Features One-piece machined steel X-Dome design for weight savings10-tooth start helps provide a wider gearing range Designed for smooth and fast shifting Specifications Cassette Body Type SRAM XDRCassette Cogs10-28T, 10-30T, 10-33T, 10-36TDrivetrain Speeds12Cassette Material One-Piece Machined Steel X-Dome Design Weight TBD | Sram | Xg-1290 E1 12 Speed Cassette Xg 1290 E1 10-33