• A little confused by a problem I haven't encountered before...

    Recently purchased this wheelset with SRAM/Shimano freehub: https://www.wiggle.com/fulcrum-rapid-red-5-db-road-wheelset

    I fitted a brand new 105 11-speed cassette, (all in correct order and lock ring torqued correctly etc). Everything seemed ok.

    However, on my first ride, I noticed a rattle when going over bumps. Realised that the cogs are moving horizontally a little, like 10 speed without a spacer or if the lock ring was loose. have checked and all seems ok?

    I guess I can just add an old 9/10 speed spacer and solve the problem, but does anybody know why I might be getting such movement from 11 speed and a hub designed for it? TIA.

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