SRAM XX1 Eagle AXS Crank Arm Assembly
Best lightweight upgrade for competitive cross country mountain bikers.
This is the gold standard for riders who prioritize stiffness-to-weight ratios above all else. By stripping away the bottom bracket and chainrings, it offers a blank canvas for a custom drivetrain build, though you’ll need to commit to a specific 8-bolt interface to make it work.
$379.99
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Who it's for
- Weight-conscious cross-country racers seeking peak climbing performance.
- Riders prioritizing long-term reliability and simplified maintenance.
- Custom bike builders wanting a polished, high-performance look.
Who should skip it
- Budget-conscious mountain bikers looking for better value-to-weight ratios.
- Aggressive trail riders frequently navigating extremely rocky or technical terrain.
- Mechanical purists or riders using non-SRAM drivetrain components.
Performance breakdown
Power Transfer
Carbon construction ensures minimal flex during high-torque climbing efforts.
Weight Efficiency
Advanced carbon layup keeps rotational mass impressively low for competitive racing.
System Integration
Seamlessly pairs with AXS electronic drivetrains for precise, reliable shifting performance.
Build Versatility
The 8-bolt interface offers modularity but limits chainring brand compatibility.
Durability
Rugged carbon design withstands the harsh impacts of aggressive trail riding.
Installation Complexity
Requires specific tools and knowledge for proper bottom bracket compatibility.
Key Specs
Intended Use
Mountain
Crank Arm Length
175 mm
Material
Carbon Fiber
Spindle Diameter
29 mm
Bottom Bracket Interface
DUB
Chainring Mount Type
Direct Mount
Chainline
52 mm
Number of Chainrings
1
Drivetrain Speed Compatibility
11-Speed, 12-Speed
Pedal Thread
9/16 inch
Know before you buy
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