Shimano DuraAce CS7800 Cassettes 1123t Cassette

Computer designed Hyperglide HG sprockets incorporate specifically positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. A superior surface treatment of CS7800 has been applied to the titanium sporockets which increased durability by approximately 30. Features Titanium, alloy carrier mounted large sprockets 9speed freehub compatible Use with Super Narrow Chain for 10speed Weight: 173g