QYAAUPMMP Round Chainring 110 BCD For 105 R7000 R8000 R9100 110bcd 40T46T 48 50T 54 56 58T 60 Road Bike Bicycle12s 12 Speed(50T Hollow)

QYAAUPMMP Round Chainring 110 BCD For 105 R7000 R8000 R9100 110bcd 40T46T 48 50T 54 56 58T 60 Road Bike Bicycle12s 12 Speed(50T Hollow)

• Universal Road Compatibility: Precision-engineered for seamless integration with 105 R7000, R8000, and R9100 series cranksets, featuring 110mm asymmetric BCD (Bolt Circle Diameter) and 4-bolt mounting pattern for plug-and-play installation without requiring calibration or modifications
• ​High-Strength Aluminum Alloy Construction: Crafted from aerospace-grade 7075-T6 aluminum with CNC machining, resisting deformation under high-torque loads and environmental stressors while maintaining lightweight performance (e.g., 74g for 40T) for enhanced power transfer efficiency
• ​Optimized 12-Speed Shifting Performance: Engineered tooth profile (compatible with HG+ chains) ensures smooth, precise gear transitions under load, reducing pedal shock by 33% and minimizing chain drops during aggressive riding or climbs
• Narrow-Wide Chain Retention Technology: Patented alternating tooth design maximizes grip on 12-speed chains, preventing derailment on rough terrain while reducing friction and noise through efficient mud-shedding capabilities
• Precision Chainline & Durability: 47.5mm chainline alignment ensures optimal meshing with cassettes, while anodized surface treatment resists wear and corrosion, extending lifespan beyond 5000km of road use without performance degradation