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Swapping shimano 9 and 10 speed cogs

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Swapping shimano 9 and 10 speed cogs

Old 04-18-09, 08:34 AM
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Swapping shimano 9 and 10 speed cogs

I have a 12-27 10 speed cassette (race bike) and a 12-25 9 speed cassette (Brevet bike).

I would like to have a 12-25 10 speed cassette and 12-27 9 speed cassette.

Can I just swap the 24 and 27 and the 23 and 25 cog, and keep the spacers the same, even though the cogs are different speeds?


I just realized they're not loose cogs. O well.
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Old 04-18-09, 02:01 PM
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Cassettes can be dissassembled and reassembled, at least those who don't use a spindle or a carrier. Haven't tried it myself, but I believe that swapping out the occasional sprocket won't upset shifting performance in any critical amount.
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Old 04-18-09, 03:20 PM
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As the OP seems to be aware, the largest 3 cogs of a Shimano 12-25 and 12-27 are riveted together on a common carrier and cannot be used individually if separated. The other cogs are the same and so there is nothing to gain by switching the large cogs.

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