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it might be a good idea to replace them
Internal or externally routed: WIRELESS
Features: Optimized pedal stroke
The Bel-Air 2
Designed especially for the home mechanic
BOX One Prime 9 Speed X-Wide Derailleur - 9 Speed YGroup_7421788553261 it might be a goodBOX shook up the drivetrain market with the release of their wide range 9 speed drivetrains. The prime 9 derailleurs are built for 11 50t cassettes without all the headaches of adjusting 12 gears. The Box One Prime 9 rear derailleur is Box's top of the range Prime 9 offering with all the bells and whistles. It features an adjustable clutch, precision sealed bearing pulleys and a fully forged construction. Who's this item for: Anyone already running a