SRAM Red E1 XG1290 cassette

Our lightest, most durable cassette breaks new ground for gearing choices as well. Four distinct cassette options, including our first 10-30T and 10-36T RED cassettes, each provide secure shift ramps specifically designed for electronic shifting, whether racing road on a 10-28T or creating an all-road setup with a 10-36T. 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: - Designed for smooth and fast shifting - Gradual gear progression between cogs — at least five one-tooth jumps on 10-28T, 10-30T and 10-33T cassettes — while still offering a wider range - 10-tooth start helps provide a wider gearing range - Designed to work with an XDR driver body - One-piece machined steel X-DOME design for weight savings Specifications: - Speed (CS): 12s - Gearing: 10-28t - Cog finish (Cassette): Rainbow - Technology (Cassette): XG - Cog sizes: 10-28t;10,11,12,13,14,15,16,17,19,21,24,28 - Driver body interface: XDR