SRAM XX SL XS-1299 T-Type Eagle 12v 10-52T Cassette – Lightness, Precision, and Maximum Efficiency
Product Description
The SRAM XX SL XS-1299 T-Type Eagle 12-speed cassette is the most advanced and lightest cassette ever made by SRAM. An integral part of the new Eagle Transmission, it is designed to offer smooth and precise shifting even under load, both when pedaling hard and when releasing.
Thanks to the Full X-SYNC design, the greater the force on the pedals, the better the shifting performance. The X-DOME architecture in fully CNC-machined hardened steel (for gears 1 to 9) ensures extreme durability, while the upper sprockets (10-12) are mounted on an ultra-light aluminum Spider, to minimize weight without compromising durability and stiffness.
The cassette is designed to work in perfect synergy with the T-Type rear derailleur thanks to direct mounting, ensuring constant and precise alignment on any frame. The 520% gear range allows tackling steep climbs and fast descents, with improved progression thanks to the 38 and 44 tooth sprockets in the low range, compared to the traditional Eagle 10-52 cassette.
The 55 mm chainline improves the chain angle, ensuring greater precision and less wear on the drivetrain. Installation is simple and secure thanks to the clearly marked Setup Cog, making assembly error-proof.
Technical Features
Speed: 12
Gear range: 10-52T
Sprocket sequence: 10, 12, 14, 16, 18, 21, 24, 28, 32, 38, 44, 52
Technology: XS with Full X-SYNC design
Material: sprockets 1-9 in CNC hardened steel (X-DOME), sprockets 10-12 on aluminum spider
Drivetrain configuration: 1x
Chain compatibility: T-Type
Derailleur compatibility: Full Mount installation
Compatible with XD freehub body
Supported chainline: 55 mm
Finish: Black
Weight: 350 g (estimated technical data)
Main Advantages
- The lightest Eagle cassette ever produced by SRAM
- Smooth and precise shifting even under high load
- Mixed steel/aluminum architecture for maximum efficiency and durability
- Optimized progression with new 38T and 44T sprockets
- Full compatibility with SRAM Eagle T-Type 12v drivetrains
- Installation facilitated by the integrated Setup Cog
