The XX SL Eagle Cassette from SRAM provides a new level of shifting performance, offering the best ever inboard and outboard shifting under load. With a full X-SYNC design the harder you pedal, the better it shifts, as well as being the lightest Eagle cassette SRAM has produced it also offers precision not seen before and a new level of durability.A whole new level of shifting performanceThanks to its full X-SYNC design, the harder you pedal, the better it shiftsThe lightest Eagle cassette in SRAM s historyUltra precise shifting and more durable than ever beforeNew generation fully machined hardened steel X-Done architecture for gears 1-9Ultra lightweight aluminium spider cog for gears 10-12Cassette and derailleur contact directly, ensuring perfect alignment on every bikeNot suitable for E-MTBMassive 520% (10-52) gear rangeNew-gen design is our lightest ever 10-52T cassette due to the ultra-lightweight, all-aluminium Spider CogFull X-SYNC for best-ever inboard and outboard shifting per