HG81 10 Speed cassette featuring light weight minimal design sprocket carrier
4 largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity
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
Sprockets are cut away and drilled to reduce weight without reducing rigidity
For Super Narrow 10-speed HG chains