Shimano CS-HG51-8 – 8-Speed Hyperglide Cassette, 11-32T
The Shimano CS-HG51-8 is an 8-speed Hyperglide cassette designed to deliver dependable shifting for compatible bicycle drivetrains. Its 11-32T gear range provides practical gearing for everyday commuting, recreational cycling and riding on varied terrain.
Featuring Shimano Hyperglide sprocket technology, the cassette helps guide the chain between gears for smooth, consistent shifting. Its chrome-plated steel sprockets provide a durable solution for replacing a worn cassette.
Key Features
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8-speed cassette: Designed for compatible 8-speed shifting systems.
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11-32T gear range: Offers a useful combination of higher-speed and climbing gears.
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Hyperglide technology: Optimized sprocket profiles support smooth shifting.
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HG freehub mounting: Fits compatible Shimano HG splined freehub bodies.
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Steel sprockets: Chrome-plated for durability and corrosion resistance.
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HG/IG chain compatibility: Designed for compatible Shimano 6-, 7- and 8-speed HG/IG chains.
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Versatile application: Suitable for compatible hybrid, mountain and recreational bicycles.
Technical Specifications
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Brand: Shimano
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Model: CS-HG51-8
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Product type: Rear cassette
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Number of speeds: 8
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Gear range: 11-32T
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Individual sprockets: 11-13-15-18-21-24-28-32T
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Shimano sprocket combination: AW
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Technology: Hyperglide (HG)
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Freehub interface: Shimano HG spline M
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Sprocket material: Steel
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Sprocket finish: Chrome-plated
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Lockring: Steel, chrome-plated
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Compatible chains: Shimano HG/IG 6-, 7- and 8-speed chains
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Application: Compatible hybrid, mountain and recreational bicycles
Smooth Hyperglide Shifting
Shimano Hyperglide technology uses specially shaped sprockets to help the chain move efficiently between gears.
When paired with compatible shifters, derailleurs and chains, the CS-HG51-8 delivers predictable shifting for everyday riding.
Practical 11-32T Gear Range
The 11-tooth smallest sprocket provides a higher gear for faster sections, while the 32-tooth largest sprocket offers an easier gear for climbing.
The eight sprockets are arranged as follows:
11 – 13 – 15 – 18 – 21 – 24 – 28 – 32T
Compatibility
The CS-HG51-8 mounts onto compatible Shimano HG splined freehub bodies.
It requires an appropriate 8-speed shifting system. Confirm that the rear derailleur supports a 32-tooth largest sprocket and that its total capacity is suitable for the bicycle's crankset.
This product is a cassette, not a threaded freewheel. It does not screw directly onto a threaded freewheel hub.
Installation and Maintenance
Installation requires compatible cassette tools and the correct lockring tightening procedure.
When replacing a worn cassette, inspect the chain for elongation and replace it if necessary to maintain proper shifting performance.
Note: This product is the Shimano CS-HG51-8 cassette in the 11-32T configuration.
