Shimano Ultegra 6600 GS Rear Mech 10 speed (OE)

A light and durable rear derailleur for top level road use Advanced Wide Link design rear

Shimano Ultegra 6600 GS Rear Mech 10 speed (OE)

A light and durable rear derailleur for top level road use Advanced Wide Link design rear derailleur Super stiff for fast and accurate changes across the cassette Large 11 tooth pulleys increase service life and reduce noise Sealed bearing tension is smooth and durable Super light shift action Ultegra finish Compatible with 8- 9- and 10-speed drivetrains Original Equipment spec item for better value - may come unpackaged

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