Thread: 10 speed cassette to 9 speed cassette. Anything I need to know
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Old 09-28-10 | 10:24 PM
  #2  
CyciumX
Gimme back my gears!
 
Joined: Sep 2009
Posts: 1,327
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From: San Jose

Bikes: Cannondale Caad9-5 2009, Scattante XLR TT 2009, Trek Y-Foil 77 1998

You take the spacer out. 9 speed cassettes are actually ever so slightly wider than the 10 speed. Illogical, yes! The spacer should be the small ring that is in first or out last dependent on your perspective
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