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Amazon.com : SHIMANO RD-M640 Zee Shadow Plus 10 Speed Rear Derailleur (Use with 11-23/11-28 Cassette) : Rear Bike Derailleurs : Sports & Outdoors
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Shimano ZEE RD-M640 Rear Derailleur (Black) (10 Speed) (Short Cage) (SSC/Downhill) (... - IRDM640SSC - In The Know Cycling
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