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Posted 20 hours ago

Shimano CASSETTE HG400 9 speed 11-32

£11.125£22.25Clearance
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About this deal

You may sometimes see brands refer to their cassettes as having a certain range in the form of a percentage. Well, the smallest cog is a 10-tooth, and the largest cog is 52-tooth, which is 520 per cent larger than the 10-tooth cog, thus giving a 520 per cent range. Where an 11-28 would have been considered an ‘easy’ training cassette a few short years ago, the smallest cassette available for a Shimano Dura-Ace R9200 is an 11-28. That might not sound like much but, when you consider pro riders would typically ride on 11-23 or 11-25 cassettes, it’s a sizeable difference.

SRAM also offers just two cassette sizes in its Eagle lineup – 10-50 and 10-52. The 10-52 is the widest-range cassette made by either manufacturer. Although there are currently two options, it’s likely the 10-50 will be phased out in time because it has been superseded by the 10-52. However, as groupset manufacturers have jumped onto the gravel bandwagon, there are now gravel-specific gearing options available on the market. These days, it is increasingly common to see higher-spec road bikes with 12-speed gearing, Shimano having joined SRAM and Campagnolo with 12-speed groupsets in 2021 with the release of its Dura-Ace Di2 R9200 groupset. On the mountain bike side, Shimano uses its Microspline freehub standard for its 12-speed Deore, SLX, XT and XTR groupsets.

Mountain bike cassettes

This saves weight and, since it isn’t subject to wear from the chain, the carrier is often made of a lighter material – carbon fibre in the case of Dura-Ace cassettes

Gravel bikes are best viewed as a crossover between a road and mountain bike. As such, it’s normal to see them specced with either a road or mountain bike cassette.There are new rear derailleurs on the market that are identifiable as being compatible because they have a ‘520% range’ graphic printed on the derailleur cage. SRAM Eagle AXS rear derailleurs are compatible with the new 10-52 cassettes. Beyond weight, there’s not much difference in performance between a Dura-Ace 11-28 cassette and one from a Shimano Ultegra or a Shimano 105 groupset, so you can save yourself considerable expense by down-speccing.

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