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Broke my first derailleur today, Shimano Deore M5100, is it worth upgrading and to what? : r/bikewrench
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MTB Product of the Year - Long-Term Review of Shimano's 12-Speed Deore Group - Mountain Bike Feature - Vital MTB
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Amazon.com : Shimano Deore SGS RD-M592 Rear Derailleur (9-Speed, Long Cage, Black) : Rear Bike Derailleurs : Sports & Outdoors
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