I have always thought that a Shimano 9 speed hub will take a 10 speed cassette also- is this true?
Yes, but you need a 1mm spacer behind the 10s cassette, unless it's a 'junior' style Ultegra 10s. The spacer should come with the cassette if needed.
@gbj_tester started
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Yes, but you need a 1mm spacer behind the 10s cassette, unless it's a 'junior' style Ultegra 10s. The spacer should come with the cassette if needed.