Note: Not supports 12-speed • Ceramic Bearing : The ceramic bearing ensures smooth and quiet operation, making your ride more enjoyable. • Carbon Fiber Pulley Wheel : The carbon fiber pulley wheel is lightweight and durable, providing a high-performance experience. • Compatible with Shimano 105/UT/Ultegra/DURA ACE : This rear derailleur is compatible with a wide range of Shimano components, making it a versatile choice for any cyclist. • Rear Derailleur : The rear derailleur is an essential component for any bicycle, ensuring proper shifting and chain management. Warning: The 105 kit series is divided into the new R7000 and the old 5800 and below models. Their applicable guide wheels are different. If your model is 105-5800 and below, please purchase the 5800 guide wheel. If your model is 105-R7000, please purchase the 105 guide wheel. The order of confirming the model is: 105 series, (...) model

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