Wide range and tight jumps? Why not both? The SRAM Red XG-1290 E1, their lightest, most durable cassette breaks new ground for gearing choices as well. Four distinct cassette options, including the 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 the rider in the right gear when you're out of the saddle on steep cli
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