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I'm looking to build a 1x10 commuter bike.

Want to decide between these two cassettes

XT series:

http://a.co/d4ez069

HG series: http://a.co/j4z8KFn

How do they differ?

I still haven't bought chain and crankset.

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  • This is a bit of a shopping question, but its about a consumable item that may crop up in legitimate repairs.
    – Criggie
    Dec 1 '16 at 3:51
  • HG81 is typically seen as being in the SLX quality of the range (1 down from XT). Difference would be marginal unless 'XT' writing on all your components is important to you.
    – mattnz
    Dec 1 '16 at 5:51
  • If Shimano didn't put out different models of the same part they'd have to charge everyone the same price. Dec 1 '16 at 19:40
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XT is shimano's MTB line - and its second below the XTR line. It weighs a claimed 275 grams, and can be split in the middle to remove a medium cog and add a larger one on the end.

HG is also a MTB line, but ranks somewhere below XT. It weighs more at around 430 grams, and therefore is more solid. It cannot be tweaked, but will be more robust and less prone to breaking.

In 2016, the Shimano MTB group lineup is something like this:

Lowest TOURNEY, ALTUS, Acera, ALIVIO, Deore, Deore LX, Deore XT, XTR Highest

By comparison, the road groups are

Lowest A050, Tourney, Claris, SORA, TIAGRA, 105, Ultegra, DURAACE, Highest

A further breakdown can be found at http://productinfo.shimano.com/#/lc/1.7


To clarify - here's shimano's current line up, according to shimano, from the link above, which is dated 2016 and titled "Product lineup"

enter image description here

Note this is from the PDF linked from that page.

Answer My advice would be to get the cheaper heavier cassette and a new chain at the same time. They are wear items, and should be replaced periodically. Some indication that the light one was perhaps too light for the amount of power some riders were generating.

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    Models with HG after the CS- or CN- aren't specifically MTB components. They just stick it in the model code of various cassettes and chains that aren't tied to specific groups. Sometimes the boxes for those cassettes and chains have group logos for mountain and road groups simultaneously to denote compatibility. Dec 1 '16 at 4:25
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    -1: TOURNEY is not considered a MTB, Deore LX has been obsolete for probably decade. There is also Zee and Saint and SLX. Too much is factually incorrect here.
    – mattnz
    Dec 1 '16 at 5:49
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    @mattnz Fair enough. Please have a look at the posted link from Shimano productinfo.shimano.com/#/lc/1.7 which clearly shows two variants of Tourney at the bottom of their MTB column. You're correct that Deore LX is not a current MTB model, but it is current in the "trekking" lineup.
    – Criggie
    Dec 1 '16 at 6:49
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    With the reference, I have removed my down vote - I now think in the entire industry, its only the marketing team at Shimano that consider TOURNEY MTB series :)
    – mattnz
    Dec 1 '16 at 19:10

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