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CNC Pulley Rear Derailleur 12/14T Wheel Si3N4 Ceramic Bearings Lightweight Design Improved Speed Change Performance

<ul><li>【Ceramic Bearings】Equipped with Si3N4 ceramic bearings, this rear derailleur wheel provides resistance to deformation, cold and high temperatures, wear, and . It ensures high transmission efficiency and a more labor-saving riding experience.</li><li>【Lightweight Design】With a focus on weight reduction, the 12T wheel weighs only 8g, and the 14T weighs only 14g. This light design enhances overall performance and efficiency.</li><li>【Extended Lifespan】The design with Si3N4 ceramic bearings reduces the centrifugal effect of the outer ring by 40% while rotating. This significantly prolongs the service life of the wheel.</li><li>【Optimized Tooth Profile】Featuring a wide and narrow tooth profile, this wheel fits more closely and minimizes the gap. It enables a quicker response time during speed changes and enhances overall shifting performance.</li><li>【 for durable Construction】Made from aluminum alloy, this rear derailleur pulley is not only for durable but also practical for long-term use. It is compatible with various transmission systems and suitable for MTB, Road Bikes, and more.</li></ul>

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Feature:* Road Bike Ceramic Bearing CNC Pulley Rear Derailleur 12/14T Wheel&nbsp;*light design, 12T only 12.8g, 14T only 14g*Si3N4 ceramic bearings are not easily deformed by force, and are resistant to cold and high temperature, wear and resistance, high transmission efficiency, and more labor-saving riding*Si3N4 ceramic bearings Design,When rotating, the centrifugal effect of the outer ring can be reduced by 40%, and the service life is greatly extended*The wide and narrow tooth profile fits more closely and reduces the gap, which can shorten the speed change response time and improve the speed change performance to a certain extent.*Deepen the tooth marks to reduce the chain loss, optimize the inclined tooth shape, and synchronize with the chain transmission direction, so that the chain entry and chain release are smooth*Made of high quality aluminum alloy material, and practical to useSpecification:*Material: Aluminum alloy + ceramic*Opt Color: Black,Red, Gold(As Pictures Show)*Opt Type: 12T/14T*Size: 50*50mm (12T)/57*57mm(14T)*Weight: About 12.8g (12T)/ 14g (14T)*Applicable screw aperture: 4/5/6mm*Applicable transmission : 8/9/10/11 speed*Compatible: for ,Road Bike etc.&nbsp;Package Includes:1 x Rear Derailleur Pulley2 x AdapterNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.