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Amazon.com : THALOUS Bicycle Rear Derailleur 6/7/8 Speed Tourney RD-TY300 RD-TX800 Altus RD-M310 for MTB Bike Direct Mount : Sports & Outdoors
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Shimano Altus FC-M311 Crankset (Black) (3 x 7/8 Speed) (Square Taper) (170mm) (48/38/28T) - Performance Bicycle
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