Genuine Shimano replacement part

• Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load
• Close ratio gearing allows a more efficient use of energy through finer cadence control
• Largest sprockets are mounted on lightweight alloy carriers to reduce weight and increase rigidity
• Sprockets are cut away and drilled to further reduce weight without reducing rigidity
• Light and durable 40/42T sprockets
• Chrome-plated finish offers hard wearing resistance to corrosion
• Alloy cassette lockring
• For 11-speed HG-X11 MTB chains