BOX Cosine Chainring
Best reliable drivetrain component for demanding cyclists.
Crafted from durable aluminum with a rounded tooth profile, this chainring is built to last and minimize wear on your chain. It offers a reliable upgrade for cyclists looking for quality and longevity in their drivetrain components.
$49.99
at
San Diego Bike Shop
More Cosine options
Who it's for
- Riders tackling aggressive trails or demanding BMX tracks
- Aggressive riders seeking long-lasting, reliable drivetrain components
- Performance-focused cyclists prioritizing every watt of their effort
Who should skip it
- Budget-conscious riders or those needing basic replacement parts
- Cyclists with non-standard cranksets or those upgrading piecemeal
- Riders sensitive to drivetrain noise or those with less-than-perfect chainlines
Performance breakdown
Material Durability
High-grade 6061-T6 aluminum offers exceptional strength-to-weight ratio for aggressive riding.
Manufacturing Precision
CNC-machining ensures tight tolerances and consistent engagement across every tooth.
Drivetrain Efficiency
Rounded tooth profile minimizes friction for smoother, more direct power transfer.
Component Longevity
Robust construction actively combats chain wear to extend overall drivetrain lifespan.
Weight Optimization
Lightweight design sheds unnecessary mass without sacrificing structural integrity.
Installation Compatibility
Standard 144mm BCD ensures a secure fit for most track-style cranksets.
Key Specs
Material
6061-T6 aluminum
Manufacturing Process
CNC-machined
Tooth Profile
Rounded
Number of Teeth
38
Weight
130g
BCD
144 mm
Know before you buy
Still have a question?
Ask Metto anything about the BOX Cosine Chainring before you decide.
