Cybrei Metarbon Aero Carbon Fiber Chainring BCD 110x4 - Outer - 54T (38)

The Metarbon Aero was created with a single goal: to build the world’s best chainring. After countless design iterations, material innovations, and structural refinements, the result is a chainring that combines cutting-edge performance with striking aesthetics.

Crafted from high-modulus carbon fiber and 7075-T6 CNC-machined aluminum, the Metarbon Aero delivers exceptional durability, ultra-efficient shifting, and market-leading stiffness-to-weight performance. The innovative 54/38T option offers riders a new balance between speed and climbing efficiency, alongside the classic 50/34T and 52/36T setups.

Every detail is engineered with precision, from its aerodynamic profile to its feather-light construction, making it a true choice for riders who demand both performance and perfection.

Key Features

- Material: High-modulus carbon fiber with CNC-machined 7075-T6 aluminum

- Speed Compatibility: 11-speed and 12-speed drivetrains

- Bolt Circle Diameter (BCD): 110 × 4 (Shimano® standard)

- Sizes Available: 50T (34) | 52T (36) | 54T (38)

- Weight: 135g (50/34T)

- Finish: Carbon fiber weave

Scope of Delivery

- 1 × CYBREI Metarbon Aero Chainrings 
Screws not included - screw kit available separately.

Why Metarbon Aero?

- Distinctive carbon fiber aesthetics

- Exceptional shifting efficiency

- Innovative gearing options including 54T (38)

- Market-leading stiffness and lightweight construction

- Engineered through rigorous testing and continuous refinement