What is the most durable and reliable Shimano groupset: Deore, Tiagra, 105, Ultegra or Dura-Ace? - Quora
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Shimano 105 FD-R7000 Front Derailleur - Components
Installing a Shimano 105 RD-R7150 rear derailleur onto a 2019 Checkpoint SL5 and I'm having trouble determining whether or not I need the mounting piece circled. Googling only made me more confused.