Shimano Altus CS-HG31 Cassette - 8 Speed | 11-34t
Cassettes
Shimano Altus CS-HG31 Cassette - 8 Speed · 11-34t
Shimano Altus CS-HG31 Cassette - 8 Speed | 11-34t
The Shimano Altus CS-HG31-8 is an 8-speed MTB cassette built on Shimano's HYPERGLIDE platform, delivering reliable indexed shifting with the specially positioned shift ramps and tooth profiles that define Shimano's cassette shifting performance. Read the overview
At a glance
- Speed
- 8-speed
- Range
- 11-34T
- Technology
- HYPERGLIDE
1 in stock
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Overview
Why Is the Shimano Altus CS-HG31 a Practical 8-Speed Cassette for Budget MTB Builds?
The Shimano Altus CS-HG31-8 is an 8-speed MTB cassette built on Shimano's HYPERGLIDE platform, delivering reliable indexed shifting with the specially positioned shift ramps and tooth profiles that define Shimano's cassette shifting performance. The wide 11-34T gear spread gives riders a genuinely usable low gear for steep climbs without requiring any mechanical compromise elsewhere in the drivetrain, making it an effective choice for recreational MTB and hybrid builds on tighter budgets.
Compatible with all Shimano 8-speed MTB drivetrains. Requires a standard Shimano 8-speed freehub body and an 8-speed chain.
All the specs
MPN ECSHG318134
- Model
- CS-HG31
- Speed
- 8-speed
- Range
- 11-34T
- Technology
- HYPERGLIDE
- Groupset match
- Shimano Altus
- Compatible
- All 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 →What gears does this 11-34T cassette have?
Shimano lists the cogs as 11-13-15-17-20-23-26-34T. The large 34T cog gives budget builds a real climbing gear without requiring higher-spec components.
Is the CS-HG31 compatible with Shimano Acera and Alivio 8-speed drivetrains?
Yes. The CS-HG31-8 is compatible with all Shimano 8-speed MTB drivetrains including Altus, Acera, and Alivio.
What chain should I pair with the CS-HG31?
Use a Shimano 8-speed chain such as the CN-HG71 or CN-HG40 for correct shifting performance.
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