Clark W. Griswold
Join Date: Mar 2014
Location: ,location, location
Posts: 13,505
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
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Probably would just buy a 9 speed cassette in the right ratio? Nothing special about the Dura Ace Cassette or chain other than maybe being lighter or having a bit more titanium cogs loads of cassettes on the market you just need to match what you have and make sure it is s-group compatible.