Shimano 105 CS-R7101 12 Speed Cassette - 11-34T

- High performance Hyperglide+ 12-speed 105 Road 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
- Largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity
- Sprockets are cut away and drilled to further reduce weight without reducing rigidity
- Nickel-plated finish offers hard wearing resistance to corrosion
- Pearl-bright steel cassette lockring
- For Super Narrow 12-speed chains