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SRAM XX Eagle SL Transmission XS-1299 12-Speed Cassette

sku# 243233
SRAM - XX Eagle SL Transmission XS-1299 12-Speed CassetteSRAM - XX Eagle SL Transmission XS-1299 12-Speed Cassette
Model Info


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Product Info

The SRAM XX Eagle SL Transmission XS-1299 12-Speed Cassette is another smooth banger in SRAM's cross compatible Eagle lineup. With its X-SYNC technology, this cassette effortlessly adapts to your pedal power, making every gear change feel like a breeze. It's not just featherlight; it's a masterpiece of precision and durability. Take your cycling experience to new heights with a colossal 520% gear range, and thanks to the clearly marked Setup Cog, installation is as easy as it gets. Elevate your ride with the XX SL Eagle Transmission Cassette and experience shifting perfection like never before!

Product Details


Gears 1 - 9Hardened steel X-Dome architecture

Gears 10 - 12All-aluminum Spider Cog


X-Dome™X-DOME technology creates an incredibly lightweight, precise and strong cassette. The open design aids in mud clearance, giving you cleaner shifting performance and longer component life.

12-Speeds10 / 12 / 14 / 16 / 18 / 21 / 24 / 28 / 32 / 38 / 44 / 52

520% Gear RangeThe 52 tooth cog steps down with improved gear progression with 44 and 38 tooth cogs in the low end (compared to the Eagle drivetrain 10-52-tooth cassette)

X-Sync ChainringSRAM X-SYNC 1x chainrings provide the highest level of performance and durability. The SRAM X-SYNC tall square teeth edges engage the chain easier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chainrings have been designed with mud clearing recesses for the inner chain links and rollers.

Optimized Gear Steps on Low End

Setup Cog for Fool-Proof Set Up

Speed12s T-Type


XD™ Driver BodyAllows the use of a 10-tooth small cog and provides an improved interface with the cassette.

55mm chainline Compatibility for More Moderate Chain Angle, Longer Wear and Greater Precision

Compatible with All Eagle™ Drivetrain Systems

Not Suitable for E-MTB


  • Material: Aluminum
  • Drivetrain Speed: 12-Speed
  • Biking Type: Mountain More 
  • Warranty: 2 Years
Size 10-52t
Weight (g) 350

Other Notes

SRAM products can only be shipped within the United States



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