The SRAM RED E1 Cassette is SRAM’s lightest and most refined road cassette, engineered for ultra-fast, precise shifting and maximum drivetrain efficiency. Designed for RED AXS E1 systems, it delivers a premium balance of wide-range gearing, tight cadence steps, and race-level durability. Key Features & Benefits X-Range Wide Gear ProgressionAvailable in 10-28T, 10-30T, 10-33T, and 10-36T options, the cassette provides a broad gear range while maintaining carefully tuned cog spacing for smooth cadence transitions. One-Piece X-DOME ConstructionMachined from a single steel block, the X-DOME design increases stiffness, improves durability, and significantly reduces weight for race-optimized performance and efficiency. AXS Electronic Shift OptimizationEach cog is engineered with shift ramps specifically tuned for electronic shifting, ensuring fast, clean gear changes even under high torque loads. 10-Tooth Start for Maximum Range EfficiencyThe 10T smallest cog expands overall gear range without requiring larger chainrings, allowing riders to maintain high-speed efficiency while preserving climbing capability. Flattop Chain CompatibilityFully optimized for SRAM Flattop chains (D1 / E1), delivering quiet operation, reduced wear, and improved drivetrain longevity. Multiple Terrain Options (Road to Gravel)From tight 10-28T road racing setups to 10-36T endurance and gravel configurations, the RED cassette adapts to performance road racing and mixed-surface riding alike. Technical Specifications Drivetrain Compatibility: SRAM AXS 12-speed Cassette Range Options: 10-28T, 10-30T, 10-33T, 10-36T Driver Body: XDR only Construction: One-piece machined steel (X-DOME) Cog Material: Steel Chain Compatibility: SRAM Flattop D1 / E1 Shifting Technology: Optimized AXS electronic shift ramps Use Case: Road racing, endurance, all-road, gravel performance builds Weight: Approx. 180g (varies by range)
Related
Related
Related
Related