XG-1299 XX1 Eagle

Description
Built for elite race machines and high-end dream builds, the SRAM XG-1299 Eagle Cassette represents the pinnacle of 12-speed performance. Offering an enormous 520% gear range with its 10–52T spread, riders can now run larger chainrings for more top-end speed without sacrificing climbing ability.

With more usable gears higher in the cassette, athletes spend more time in the most efficient zone—reducing wear and improving power transfer. SRAM’s proven X-Dome™ architecture ensures maximum strength and durability while remaining incredibly lightweight. Compatible with the XD™ driver body, it’s also fully backwards compatible for easy upgrading on existing Eagle™ setups.

As the flagship cassette of the Eagle ecosystem—with countless Olympic, World Cup, and World Championship wins—the XG-1299 completes any XX1 Eagle AXS™ build. Available in SRAM’s full Eagle Colorsystem—Black, Gold, Rainbow, and the new Copper finish—it brings both performance and style to the world’s most elite bikes.

Model ID: CS-XG-1299-B1

Features

• Massive 520% gear range allows stronger riders to use larger chainrings without losing climbing gears.

• Eagle Colorsystem options let riders match their cassette to chain and drivetrain—Black, Gold, Rainbow, and Copper.

• Built with industry-leading X-Dome™ architecture for exceptional strength and durability.

• Perfect match for XX1 Eagle AXS™ builds and fully backwards compatible with existing 12-speed Eagle drivetrains.

Specifications

• Speed: 12-speed

• Gearing: 10–52T

• Finish Options: Copper, Gold, Rainbow

• Technology: XG

• Cog Sizes (10–52T): 10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 52

• Drivetrain Configuration: 1x

• Cassette Max: 52T

• Cassette Min: 10T

• Chain Technology: Eagle

• Rear Derailleur Mount Compatibility: MTB, Road, Road L, UDH