CYBREI METARBON AERO 2X Carbon Chainring Combo (110×4 BCD)

Engineered for Speed. Built for Victory.

The METARBON AERO 2X isn't just a chainring; it's a engineering masterpiece. By wrapping high-modulus (HM) carbon fiber around a precision-machined 7075-T6 aluminum core, CYBREI has created a dual-ring system that is significantly lighter, stiffer, and more aerodynamic than traditional solid-alloy options.

Whether you are sprinting for the line or tackling a steep alpine climb, the optimized tooth profile ensures rapid, reliable shifting under heavy load. The "Aero" shaping cuts through the wind, saving you precious watts, while the oversized thickness (5.6mm–5.9mm) eliminates flex, delivering every ounce of your power directly to the road.

🚀 Key Benefits & Features:

• Hybrid Construction: High-modulus Carbon Fiber (Big Ring) + 7075-T6 Aluminum (Small Ring). This combination gives you the weight savings of carbon with the wear resistance of aircraft-grade aluminum.

• Incredible Weight: Weighs just ~135g (for 50/34T combo). Shed rotational mass for quicker acceleration and easier climbing.

• Increased Stiffness: Boasts a 31% increase in both lateral and drive rigidity compared to standard alloy rings—maximizing power transfer.

• Aero Optimization: Features an aerodynamic profile designed to reduce drag during high-speed pursuits.

• "Big Gearing" Options: Available in rare "super-big" combos like 54/38T and 58/42T for flat-land crit racers and time-trialists.

• Precision Shifting: Specially designed shift pins and ramps ensure crisp, dependable front derailleur performance compatible with 11 & 12-speed Shimano chains.

⚙️ Technical Specifications:

• Model: METARBON AERO 2X

• BCD (Bolt Circle Diameter): 110x4 (Shimano 4-bolt standard)

• Available Combos: 50/34T, 52/36T, 54/38T, 54/40T, 58/42T

• Speed Compatibility: 11-speed & 12-speed Shimano HG+ chains

• Thickness: 5.6mm – 5.9mm (Reinforced for rigidity)

• Material: HM Carbon Fiber (Outer) / 7075-T6 Aluminum (Inner)

⚠️ CRITICAL COMPATIBILITY & INSTALLATION NOTES

Please read carefully before purchasing to ensure a smooth installation.

✅ Compatible With:

• Shimano Dura-Ace R9200 / Ultegra R8100 / 105 R7100 (12-speed cranksets).

• Most standard 110x4 BCD crank spider arms and spider-based power meters.

❌ NOT Compatible With:

• Shimano 11-speed cranksets (e.g., R9100, R8000, R7000).

• Power meter cranksets from Shimano, 4iiii, or Stages (these use a different mounting interface).

🛠️ Installation Tip:

• Standard bolts may be too short due to the increased 5.6mm thickness. We highly recommend purchasing CYBREI-specific extended chainring bolts (sold separately) to ensure safe and secure installation.

📦 What’s in the Box:

• 1x CYBREI METARBON AERO 2X Outer Carbon Ring (Size based on selection)

• 1x CYBREI METARBON AERO 2X Inner Aluminum Ring (Size based on selection)