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  • I have a UG/HG compatible hub (threads inside and outside) with a 7 speed cassette on it; the lock ring screws off and the smallest sprocket then the others together slide off. However the STI shifter is 8 speed, so it doesn't work perfectly.
    Will an 8 speed cassette fit on this hub?

  • Will an 8 speed cassette fit on this hub?

    Almost certainly. As long as the external UG sprocket threads are interrupted by the full length splines (right hand image), you can fit an 8-speed HG cassette

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