ONE. AND ONLY. SRAM XX1 was built with a dedicated 1X drivetrain philosophy-making it simpler, lighter and more durable than any other. No matter where you ride, no matter what you're up against: SRAM XX1. UNSTOPPABLE.
Driven by a cutting-edge, single-ring carbon crank and seamless component integration, SRAM 1X drivetrain delivers flawless chain management and 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.
The XX1 chain represents the latest breakthrough in a long line of precise, light-weight chains from SRAM. It's designed to deliver the greatest strength and reliability to a drivetrain that doesn't have to make compromises for front shifts.
The HollowPin construction provides smooth, precise shifting and weight savings without sacrifising strength.