Shimano Ultegra (8100/50) & Dura-Ace (9200/50) - 12s - Oversized Derailleur AERO Cage - 14-19T

The aero cage for Shimano 12-speed Dura Ace 9250 and Ultegra 8150 groups is specially designed to maximize the aerodynamic performance of your road bike. Made from lightweight and durable materials, this cage offers a significant reduction in drag, allowing you to gain speed and efficiency on the road. Its optimized design ensures smooth and precise operation, even in the most demanding conditions.

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1. Aluminum Pulleys and Carbon Plates: CyclingCeramic Oversized Pulleys are equipped with precision-machined aluminum pulleys, combined with lightweight and durable carbon plates. This material combination ensures a significant weight reduction while providing superior strength, perfectly suited for road requirements. Their sleek and aerodynamic design enhances the overall aerodynamics of your transmission, helping you gain speed and efficiency.
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2. Ceramic Bearings Technology: The ceramic bearings in CyclingCeramic Oversized Pulleys are specifically tailored for Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2 derailleurs. With these high-quality bearings, you benefit from a notable reduction in friction during gear changes, resulting in smoother transmission and noticeable energy savings. Enjoy a more efficient pedaling experience, optimizing your performance during climbs and sprints.
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3. Tested by Frictions Facts: CyclingCeramic Pulleys bearings derailleurs have undergone rigorous testing by Frictions Facts, an independent laboratory specializing in analyzing friction and transmission efficiency in cycling. The test results have confirmed that CyclingCeramic's ceramic bearings are among the fastest in the market, with a measured friction of only 0.033w. This exceptional performance ensures ultra-efficient transmission, allowing you to gain speed and precision during your rides.
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4. Reduction in aerodynamic drag for increased speed: Save until 7 seconds compared to OSPW CyclingCeramic and 40 seconds compared to a standard Shimano 12 speed cage on 40 km. \n
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5. Lightweight construction for optimal performance: Carbon plates and aluminium pulley wheels. \n
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6. Specific design for perfect compatibility with Shimano 12-speed groups DURA ACE and Ultegra. \n
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7. Improved responsiveness and efficiency in gear shifting.
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\nCompatibility: CyclingCeramic Oversized Pulleys are perfectly compatible with Shimano Dura Ace 9250 DI2 and Ultegra 8150 DI2 derailleurs, providing you with a tailor-made solution to enhance the performance of your transmission. \n \nGive your Shimano DI2 derailleur a competitive edge with CyclingCeramic Oversized Pulleys. Experience smooth transmission, improved responsiveness, and increased durability during your bike rides. Choose excellence and push your limits with CyclingCeramic! \n \nCompatible with Shimano Dura Ace 9250 and Ultegra 8150 \n \n