Shimano CS-R9100 Dura-Ace 11 Speed Cassette – Silver – 11-30T

Super lightweight 11-speed HG-EV cassette with a rigid carbon and alloy carrier for excellent shifting even under the most demanding gear changes. Hyperglide EV sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load

Key Features:

• Close ratio gearing allows more efficient use of energy through finer cadence control
• Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity
• 5 largest sprockets are made from titanium to reduce weight without sacrificing strength
• Sprockets are extensively cut away and drilled to further reduce weight without reducing rigidity
• Nickel-plated finish offers hard wearing resistance to corrosion
• Alloy cassette lockring
• For Super Narrow 11-speed HG-EV chains
• Average weight 175 grams for 11-25 tooth