Shimano CS-HG50 Tiagra 9-speed cassette. The CS-HG50 is a good quality 9 speed road & hybrid bike cassette. It comes with sprockets that are cut away & drilled to reduce weight without sacrificing rigidity. The CS-HG50 cassette uses Hyperglide sprockets for crisper shifting & is nickel plated for durability. Features High quality 9-speed cassette 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 & drilled to reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Corrosion-resistant steel cassette lockring For Super Narrow 9-speed HG chains Average weight 270 g for 12
- 23T