It may look normal from the outside, but the engineering inside this incredible new chain design makes possible a range of speeds previously found only in two-chain transmissions. It's also the main factor that contributes to the ultra-smooth, precise, durable and quiet performance of Eagle transmissions. Eagle chain links have a smooth radius with no sharp edges or chamfers, which greatly reduces noise, friction and wear on chainrings and cassette sprockets.This design also results in a flatter plate, which means smoother chain riveting and greater overall strength. HARD CHROME technology extends optimal chain life, and a titanium nitride coating on Gold and Black models reduces corrosion and friction.Features:New design and revolutionary chain technologyThe Eagle chain has been completely redesigned and is produced with a new manufacturing technologyAll-new Eagle PowerLock® chain connector with FLOWLINK technology provides better chain guidance and longer lifeXX1 Eagle chain i...