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Shimano 105 RD-5800 Medium Cage Rear Derailleur

Shimano 105 RD-5800 Medium Cage Rear Derailleur

Completely redesigned for the 11-speed drivetrain, the gap between Ultegra and 105 continues to get smaller. Trickle-down technology benefits this derailleur by making it the most precise rear shifting the 105 drivetrain has ever seen.

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