It may look normal from the outside, but the engineering inside this incredible chain design makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the greatest contributor to Eagle drivetrain’s ultra-smooth, precise, durable and quiet performance. The Eagle chain’s links have a smooth radius, with no sharp edges or chamfers, which yields a significant reduction in noise, friction and wear on chainrings and cassette cogs. This design also allows a flatter plate, which means more consistent chain riveting and greater overall strength. HARD CHROME technology extends the chain’s optimal life. Groundbreaking new chain design and technology The Eagle chain has been completely re-engineered and is produced with new manufacturing technology Eagle PowerLock chain connector with FLOW LINK technology provides better chain-guiding and increased longevity The Eagle chain is the quietest, strongest, and most wear-resistant chain in the world Unique features and design also provide significantly improved wear resistance on Eagle cassettes and rings