Effortless Performance. Effortless Perfection. Wide range and tight jumps? With the SRAM RED XG-1290 cassette, you don't have to choose. As the lightest and most durable cassette in SRAM's lineup, the XG-1290 breaks new ground in gearing choices. Available in four distinct configurations, including SRAM's first 10-30 and 10-36 cassettes, this cassette ensures secure shift ramps tailored specifically for electronic shifting. Whether you're racing on a 10-28 or setting up for all-road adventures with a 10-36, the XG-1290 keeps you in the right gear at all times. The carefully selected tooth jumps are designed to maintain your momentum, whether you're powering out of the saddle on steep climbs or making precise adjustments in a sprint. Cog Sizes: 10-28 : 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 28 10-30 : 10, 11, 12, 13, 14, 15, 17, 19, 21, 24, 27, 30 10-33 : 10, 11, 12, 13, 14, 15, 17, 19, 21, 24, 28, 33 10-36 : 10, 11, 12, 13, 15, 17, 19, 21, 24, 28, 32, 36 Key Features: Designed for Smooth and Fast Shifting : The XG-1290 ensures seamless transitions between gears, keeping your ride smooth and efficient. X-DOME Technology : The one-piece design, milled from a steel block, creates an incredibly lightweight, precise, and robust cassette. The open design repels dirt effectively, extending the life of the cassette and maintaining high performance. Progressive Gear Graduation : Featuring at least five gear jumps with only one tooth difference, providing a more consistent cadence and smoother riding experience. 10-Tooth Small Sprocket : Extends the gear range, offering greater versatility for various riding conditions. Suitable with XDR Freewheels : Compatible with SRAM's 12-speed road bikes, ensuring a perfect fit with modern drivetrains. Technologies of SRAM RED XG-1290: X-Range : Designed for the modern road cyclist, X-Range provides a wider gear range with smoother progression, ensuring you're always in the optimal gear. Coupled with AXS technology, it offers smarter shift settings and a more enjoyable ride. X-DOME : This innovative one-piece construction is not only lightweight and durable but also resistant to dirt and debris, providing longer-lasting, smoother shifting performance. Specifications: Material : Steel Shifting System : 12-speed Freehub Body : XDR (SRAM 12s Road) Model Year : 2024 Color : Multicolored Weight : 180g (Manufacturer source) Manufacturer Item Code : 00.2418.142.004 (10-28) 00.2418.142.005 (10-30) 00.2418.142.006 (10-33) 00.2418.142.007 (10-36) Manufacturer's Note : Only suitable for use with Flattop chains. The SRAM RED XG-1290 Cassette is engineered for riders who demand the best in performance and durability. Whether you're on the road or tackling diverse terrains, this cassette ensures you stay in control with smooth, precise shifts and the right gear for every situation.