Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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Originally Posted by Cynikal
You shouldn't need a spacer. At least I didn't when I moved from a Ultegra 9 to a DA 10 last week. On an Ultegra hub BTW.
There is a 1mm thick spacer that comes with all Shimano 10-speed cassettes and is used when they are installed on an 8/9/10-speed hub. The spacer goes onto the hub first before the cassette is mounted.
I expect the spacer was stuck to the back of your new DA cassette and you installed it automatically when you installed the cassette.