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Shimano Ultegra 6600 10 speed compact groupset (same era as Dura ace 7800), Sports Equipment, Bicycles & Parts, Parts & Accessories on Carousell
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Amazon.com : SHIMANO Ultegra Cs-6700 Cassette 10 Speed, 11X23 : Bike Cassettes And Freewheels : Sports & Outdoors
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