GX Eagle Carbon Boost Crankset
Best lightweight carbon upgrade for serious mountain bikers seeking efficient performance.
Elevate your mountain biking with the SRAM GX Eagle Carbon Boost Crankset. Engineered for performance and value, this crankset features lightweight carbon arms for efficient power transfer on demanding trails. It's optimized for modern 12-speed drivetrains and includes a 32-tooth direct mount chainring. The reliable SRAM DUB spindle interface ensures smooth operation, while Boost spacing compatibility allows seamless integration with 141/148mm hubs. Finished in a sleek Lunar colorway, it offers a modern aesthetic and robust performance for serious riders.
$325.00
Owner Satisfaction
4.6
/ 5
Category Rank
417
/ 2111
#417 in Components
Price vs Category Average
+216%
Above average
Crank Length
175
/ mm
Who it's for
- Racers seeking to shave grams for faster climbing performance
- Aggressive riders wanting maximum power transfer during intense sprints
- Trail riders needing consistent chain security on technical terrain
Who should skip it
- Budget-conscious cyclists prioritizing value over weight reduction
- Riders frequently navigating rocky terrain prone to pedal strikes
- Owners of older bikes with non-DUB bottom bracket standards
Performance breakdown
Power Transfer Efficiency
Carbon construction provides a stiff, responsive feel under heavy pedaling loads.
Weight Optimization
Carbon arms shave significant weight compared to traditional aluminum alloy alternatives.
Drivetrain Compatibility
Seamlessly integrates with modern 12-speed systems for precise, reliable shifting performance.
Trail Durability
Robust build quality withstands the harsh impacts of aggressive mountain biking.
Installation Versatility
DUB spindle interface simplifies setup across a wide range of frames.
Chain Retention
Engineered tooth profile keeps the chain secure on the roughest descents.
Key Specs
Crank Length
175mm
Chainring Size
32T
Spindle Interface Type
SRAM DUB
Hub Compatibility
141/148 Boost
Drivetrain Speeds
12
Color
Lunar (Gray)
Number of Chainrings
Chain Retaining Single
Crank Intended Use
Mountain
Features
- Lightweight carbon crank arms
- Optimized for 12-speed drivetrains
- Boost spacing for wider frames
- Reliable SRAM DUB spindle
- Includes 32T direct mount chainring
- Durable construction for tough trails
- Sleek Lunar colorway
- Chain-retaining single ring
What customers say
Cyclists overwhelmingly praise the SRAM GX Eagle Carbon Boost Crankset for its significant weight reduction compared to aluminum options, which noticeably aids climbing and endurance. A key highlight is the carbon construction's inherent stiffness, ensuring efficient power transfer with minimal flex. Riders appreciate the premium look and feel, noting the sleek aesthetics. While priced higher than aluminum versions, many feel it offers excellent value considering the tangible performance gains over less expensive models. The consensus is that this crankset successfully balances lightweight performance and stiffness, making it a highly recommended upgrade for serious mountain bikers seeking improved efficiency.
Know before you buy
No, the bottom bracket is not included. You will need to purchase a SRAM DUB bottom bracket separately that is compatible with your frame's shell standard.
No, this crankset is specifically designed for Boost spacing (141/148mm hubs). It will not provide the correct chainline for standard non-Boost frames.
Yes, this crankset uses a direct-mount interface, allowing you to easily swap the chainring for different sizes if you want to adjust your gearing for specific terrain.
This crankset is optimized for SRAM Eagle 12-speed drivetrains. While it may physically fit other setups, the chainring tooth profile is specifically engineered for the tolerances of a 12-speed chain.
The crank arms are threaded for standard 9/16" mountain bike pedals, which covers the vast majority of modern pedals on the market.
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Ask Hayley anything about this product before you decide.
Ready to buy?
$325