SRAM XX Eagle Transmission XS-1297 12-Speed Cassette 10-52T

The SRAM XX Eagle Transmission XS-1297 12-Speed Cassette delivers premium shifting performance, lightweight construction, and exceptional durability for demanding mountain bike riding. Engineered specifically for SRAM Eagle Transmission T-Type drivetrains, the XX cassette provides precise shifting under load across technical climbs, challenging terrain, and aggressive trail riding.

Featuring SRAM's full X-SYNC tooth profile, the XX Eagle Transmission cassette is designed for reliable shifting even under heavy pedaling forces. Its wide 10–52T gearing delivers a 520% range, while optimized 38T and 44T sprockets provide smoother progression into the largest climbing gear.

The cassette uses SRAM's advanced X-DOME construction, combining a precision-machined hardened tool-steel cluster with stamped steel 38T and 44T sprockets attached to a lightweight aluminum 52T cog. This design balances weight savings, strength, and long-term durability.

Designed around a 55mm chainline, the XX Eagle Transmission cassette helps maintain more moderate chain angles for efficient operation and reduced drivetrain wear. A clearly marked Setup Cog simplifies installation and alignment when paired with a compatible Eagle Transmission derailleur.

With its distinctive silver and black finish, XD freehub compatibility, and T-Type-specific design, the SRAM XX XS-1297 is an excellent choice for riders upgrading or maintaining a high-performance Eagle Transmission drivetrain.

Key Features

• Eagle Transmission T-Type: Designed specifically for SRAM's 12-speed Transmission drivetrain system

• 10–52T Gear Range: Wide 520% gearing for steep climbs and fast descents

• Full X-SYNC Technology: Optimized tooth profiles for precise shifting under load

• X-DOME Construction: Precision-machined hardened steel cluster for strength and low weight

• Aluminum 52T Cog: Lightweight largest sprocket with attached steel 38T and 44T cogs

• Optimized Gear Progression: Improved transitions through the largest climbing gears

• 55mm Chainline Compatibility: Designed for modern Eagle Transmission drivetrain geometry

• Setup Cog: Clearly marked sprocket simplifies drivetrain installation

• XD Driver Compatibility: Fits compatible SRAM XD freehub bodies

Specifications

• Brand: SRAM

• Model: XX Eagle Transmission XS-1297

• Speeds: 12

• Cassette Range: 10–52T

• Gear Range: 520%

• Freehub Compatibility: SRAM XD

• Drivetrain Compatibility: SRAM Eagle Transmission T-Type

• Chain Compatibility: SRAM T-Type Flattop

• Cog Sequence: 10-12-14-16-18-21-24-28-32-38-44-52

• Construction: X-DOME / Steel and Aluminum

• Weight: Approximately 385g

• Color: Silver / Black

• Manufacturer Part Number: 00.2418.125.000