Hi. I bought Mavic Ksyrium ES wheelset for Shimano and a Ultegra CS-6600 10 speed (12-25) cassette.
The Mavic ES rear wheel came with a Mavic spacer and the Shimano Ultegra 10 speed cassette also came with a shimano Spacer. Do I need to use both of them or use just one of them? My casssette is not a 8/9 speed so please reply only if you know the answer for the 10 speed set up. Thanks very much!