SRAM XX1 11 Speed Chain: The XX1 chain represents the latest breakthrough in a long line of precise, light-weight chains from SRAM. Its designed to deliver the greatest strength & reliability to a drivetrain that doesnt have to make compromises for front shifts. SRAM XX1: Driven by a cutting edge, single-ring carbon crank & seamless component integration, SRAM 1X drivetrain delivers flawless chain management & faster, more precise shifting. But the relationship between XX1 components goes far beyond fitment. From the X-Horizon rear derailleur with Type 2 technology to the super wide range 11 speed 10-42T cassette, each component is designed to function synergistically with the others, achieving what no other 1X drivetrain has before. New 1X11 XX1 specific chain HARD CHROME Technology for maximum strength & wear resistance Proprietary link finish provides enhanced life span 11-speed power lock Technology Highlight (s): HARD CHROME Compatible Gears: 11 Speed XX1 Model: PC XX1 Pin Treatment: Hollow Pin Recommended Group: XX1 only Speeds: 11 Speed Compatibility: XX1 11 Speed