Clark W. Griswold
Join Date: Mar 2014
Location: ,location, location
Posts: 13,519
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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Get the correct bearings. Your local shop can measure the old one with a pair of calipers and you can then order the correct ones or you can try and reach out to Cannondale with your serial number and they can confirm the bearings needed.