I’m looking forward to trying them out Wang. I’ll wait until mid-November or late November. That’s usually when it gets severely cold. I’ll ride the Tarmac until then. I’ve only had the Tarmac built since the beginning of August, and have missed a lot of rides because or rain and heavy winds, so I’ll ride her as much as I can before winter comes.

The Ksyrium’s do feel lighter than the AlexRim’s, and they look smarter on the Cube too.

 @road-cyclist: you need often lube the ruber ring between the cassette body and hub with silicon oil,people used to complain the structure Mavic designed here,says more friction and not steady,most of hubs used to be a bearing instead there,I ＂upgraded＂a bearing on there by some smartass designed here,it seems 5% faster in decline than before I estimate

 @hypo1: Thank you for the information brother. I shall look into that on approach to winter. I hope you are well.