SRAM XG-1299 Eagle Cassette - 12 Speed | 10-52t | Rainbow

SRAM XG-1299 Eagle cassette 10-52t Rainbow Ti Nitride finish

SRAM XG-1299 Eagle Cassette - 12 Speed | 10-52t | Rainbow

SRAM XG-1299 Eagle Cassette - 12 Speed | 10-52t | Rainbow

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Why Is the SRAM XG-1299 Rainbow the Crown Jewel of Eagle Cassettes?

The SRAM XG-1299 Eagle cassette in Rainbow is the flagship of SRAM's mountain bike cassette lineup, the choice of multiple Olympic, World Cup, and World Championship winners. Built around the industry-leading X-Dome architecture, the entire 11-speed cluster is precision-machined from a single hollow steel block, then paired with an aluminum 52-tooth cog for an unmatched combination of strength, stiffness, and weight savings. The result is a cassette that shifts crisply, sheds mud and grime, and lasts season after season under serious abuse.

The 10-52t configuration delivers a massive 520-percent gear range, freeing strong riders to run larger chainrings for more top-end speed without giving up climbing range. The stunning Rainbow finish is more than just looks. It is a Ti Nitride coating that improves chain glide, sheds debris, and adds long-term durability. Pairs perfectly with XX1 Eagle AXS, S500 Eagle AXS, and any other 12-speed Eagle drivetrain on an XD driver body. This is the cassette for the build of your dreams.

$545.00
$545.00
Shipping calculated at checkout.

1 in stock

  • Orders over $100 ship free!
  • Estimated delivery: Jul 10 - Jul 14

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Specifications

  • Speed: 12
  • Gearing: 10-52t (520-percent gear range)
  • Cog Sizes: 10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 52
  • Cog Finish: Rainbow (Ti Nitride coating)
  • Technology: X-Dome machined construction
  • Driver Body Interface: XD
  • Drivetrain Configuration: 1x
  • Chain Technology: Eagle
  • Compatibility: All SRAM Eagle drivetrains (S-Series, GX, X01, XX1)
  • Race Pedigree: Olympic, World Cup, and World Championship winning
  • Model: CS-XG-1299-C1

FAQ

What is the difference between the XG-1299 and the XG-1275?

Both are wide-range Eagle cassettes with the same 10-52t configuration and 520-percent gear range. The XG-1299 uses fully machined X-Dome construction for the lowest weight and most precise tolerances in the Eagle lineup, plus the premium Rainbow Ti Nitride finish. The XG-1275 uses heavier FULL PIN construction at a more accessible price point. If you are building a race machine or chasing every gram, the XG-1299 is the move.

Does the Rainbow finish wear off?

The Rainbow finish is a Ti Nitride coating, which is more durable than a typical anodized finish. It is engineered to resist wear from the chain over time. Like any cassette, the highest-use cogs in the middle of the cluster will eventually show wear marks, but the finish is not just decorative.

Will this work with my existing Eagle drivetrain?

Yes. The XG-1299 is fully backward compatible with all 12-speed SRAM Eagle drivetrains, including S-Series (S100, S200, S500), GX, X01, and XX1. It requires an XD driver body. It is not compatible with Eagle Transmission (T-Type), which uses a different cassette mounting system.

Best For

Best for elite racers, weight-conscious riders, and dream-build enthusiasts who want the lightest, most refined Eagle cassette with World Championship pedigree. Ideal for pairing with XX1 Eagle AXS or S500 Eagle AXS on an XC, marathon, or trail race bike where every gram and every shift matters. Also a striking centerpiece for premium custom builds where the Rainbow finish completes the look.

SRAM XG-1299 Eagle Cassette - 12 Speed | 10-52t | Rainbow Reviews:

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