SRAM XX1 Eagle AXS Crank Arm Assembly
Best lightweight upgrade for serious cross country mountain bike racers.
These carbon arms offer a pro-level stiffness-to-weight ratio that transforms your bike's power transfer. By stripping away the chainring and spider, they force you to build a custom drivetrain, but that modularity makes them the ultimate foundation for riders who demand precision and future-proof compatibility.
$292.99
at
Tree Fort Bikes
More XX options
Who it's for
- Cross-country racers seeking the lightest possible drivetrain components
- Competitive athletes demanding high-performance pedaling efficiency
- Riders who value high-end aesthetics and long-term component durability
Who should skip it
- Budget-conscious cyclists looking for a more economical upgrade
- Aggressive trail riders frequently navigating extremely rocky or technical terrain
- Mechanics or owners preferring universal compatibility across different bike frames
Performance breakdown
Power Transfer Efficiency
Carbon construction ensures minimal flex during high-torque climbing and sprinting efforts.
Weight Optimization
Elite-level carbon layup keeps rotational mass incredibly low for faster acceleration.
System Compatibility
DUB spindle and 8-bolt interface integrate seamlessly with modern drivetrain ecosystems.
Durability
Rugged carbon layup withstands rock strikes and aggressive trail abuse consistently.
Customization Potential
Modular design allows riders to tailor gearing and power meter setups precisely.
Installation Ease
Standardized DUB interface simplifies bottom bracket setup for most modern frames.
Key Specs
Intended Use
Mountain
Drivetrain Speed Compatibility
12-Speed
Bottom Bracket Interface Type
DUB
Material
Carbon Fiber
Number of Chainrings
0
Chainring Mount Type
8-Bolt Direct Mount
Boost Compatible
Yes
Pedal Thread
9/16 inch
Know before you buy
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Ask Metto anything about the SRAM XX1 Eagle AXS Crank Arm Assembly before you decide.
