Shimano Alivio CS-HG51 Cassette - 8 Speed | 11-30t
Cassettes
Shimano Alivio CS-HG51 Cassette - 8 Speed · 11-30t
Shimano Alivio CS-HG51 Cassette - 8 Speed | 11-30t
The Shimano CS-HG51-8 is an 8-speed MTB cassette built on Shimano's HYPERGLIDE platform, featuring specially positioned shift ramps and optimized tooth profiles for improved chain control and fast, responsive indexed shifting across all 8 cogs. Read the overview
At a glance
- Speed
- 8-speed
- Range
- 11-30T
- Technology
- HYPERGLIDE
1 in stock
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Overview
Why Is the Shimano CS-HG51 the Right 8-Speed Cassette for Alivio MTB Builds?
The Shimano CS-HG51-8 is an 8-speed MTB cassette built on Shimano's HYPERGLIDE platform, featuring specially positioned shift ramps and optimized tooth profiles for improved chain control and fast, responsive indexed shifting across all 8 cogs. Designed for 8-speed MTB drivetrains, the 11-30T range extends the climbing capability over the 11-28T version while still maintaining a practical road-friendly gear spread for riders who mix terrain types.
Compatible with all Shimano 8-speed MTB drivetrains including Alivio. Requires a standard Shimano 8-speed freehub body and an 8-speed chain.
All the specs
MPN ECSHG518130
- Model
- CS-HG51
- Speed
- 8-speed
- Range
- 11-30T
- Technology
- HYPERGLIDE
- Compatible
- Shimano 8-speed MTB drivetrains
FAQ
Good questions
Get to know Shimano

There's more to Shimano than this one product. Our Shimano page has the full Shimano lineup we carry and more about the brand.
Visit the Shimano page →How does the 11-30T compare to the 11-28T version of this cassette?
The 11-30T adds a bit more low-gear climbing range compared to the 11-28T, making it a better choice for riders who occasionally tackle steeper climbs on varied terrain.
Is the CS-HG51-8 compatible with Shimano Acera and Altus drivetrains?
Yes. The CS-HG51-8 is compatible with all Shimano 8-speed MTB drivetrains including Alivio, Acera, and Altus.
What chain should I pair with the CS-HG51?
Use a Shimano 8-speed chain such as the CN-HG71 or CN-HG40 for correct shifting performance.
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