Shimano CS-HG50 Cassette Sprocket 7 Speed 12-25T Bikes For those still using a

For those still using a drivetrain equipped with a 7-speed freewheel on the rear wheel

Don’t let thorns

The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting

The wheel measures 20 inches in diameter by 1

and a loose-ball mid-flange hub

Shimano CS-HG50 Cassette Sprocket 7 Speed 12-25T Bikes For those still using aHigh quality 8 speed 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 Sprockets are cut away to further reduce weight without reducing rigidity Nickel plated finish offers hard wearing resistance to corrosion Corrosion resistant steel cassette lockring For