Skip to content

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.

Reviews

What riders say about the Lab

4.9 ★★★★★ 119 Google reviews of Dialed Cycling Lab Read all reviews on Google ↗
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
Scott Phillips · Google review
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
Google review
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Google review

Questions about this one?

Not sure on size, compatibility, or whether this is the right one for you? Ask us. A real person here will answer.

You are asking about Shimano Alivio CS-HG51 Cassette - 8 Speed | 11-30t

Goes straight to the Lab with the product you were looking at attached. No newsletter signup.